KV2 audio EX Series Speakers User Guide
- June 1, 2024
- KV2 audio
Table of Contents
KV2 audio EX Series Speakers
Specifications
- Model: EX Series Speakers
- Power Requirements: 115V or 230V
- AC Power Connector: PowerCon 3-pole AC main system
- Current Requirements: 2.5 Amps max at 115V AC per EX6
- Amplifier Type: Class A/B, push-pull circuitry
- Enclosure Design: Not specified
Product Usage Instructions
1. AC Power Requirements
The EX6 speakers operate on either 115V or 230V modes. The PowerCon 3-pole AC main system with locking connectors is used to prevent accidental disconnection.
2. Audio Signal Specifications
The EX6 features an integrated amplifier module that includes amplifier power, electronic crossovers, phase alignment, equalization, and speaker protection. The high-frequency compression driver is powered by KV2 Audio’s low intermodulation distortion circuitry for high audio quality.
3. Frequency Characteristics
The EX6 is designed to provide a true dynamic representation of the source audio with low distortion and loss of information across the frequency spectrum.
4. Using Multiple Boxes
Up to six EX6 speakers can be powered from one 15A breaker at 115V, and up to twelve EX6 speakers at 230V. Ensure proper power distribution and avoid overloading the circuit.
5. Drawings
Refer to the provided drawings for detailed information on the physical dimensions and layout of the EX6 speakers.
Frequently Asked Questions
- Q: Can I change the operating voltage mode of the EX6 in the field?
- A: Yes, although pre-configured at the factory, the unit’s operating voltage mode can be changed in the field following the provided instructions.
- Q: What is the maximum number of EX6 speakers that can be powered from a single breaker?
- A: Up to six EX6 speakers can be powered from one 15A breaker at 115V, and up to twelve EX6 speakers at 230V, ensuring proper current requirements are met.
EX Series Speakers
User Guide
· EX6 · EX26 · EX10 · EX28 · EX12 · EX15
The Future of Sound. Made Perfectly Clear.
At KV2 Audio our vision is to constantly develop technologies that eliminate
distortion and loss of information providing a true dynamic representation of
the source. Our aim is to create audio products that absorb you, place you
within the performance and deliver a listening experience beyond expectations.
EX Series Speakers · Important Safety Instructions
Important Safety Instructions
Before using your EX Series Speakers, be sure to carefully read the applicable
items of these operating instructions and the safety suggestions.
1. Read all product instructions. 2. Keep printed instructions, do not throw
away. 3. Respect and rewiew all warnings. 4. Follow all instructions. 5. Do
not use this unit near water, in unprotected out door areas or in rain or wet
conditions. 6. Clean only with dry cloth. 7. Do not block any ventilation
openings. 8. Install in accordance with KV2 Audio’s recommended installation
instructions. 9. Do not install near any heat sources such as heat radiators,
heat registers, stoves or other apparatus
that produce heat. 10. Do not defeat the safety purpose of the grounding type
plug. A grounding type plug has two blades
and a third grounding connector. The third connector is provided for your
safety. If the provided plug does not fit into your outlet, consult an
electrician for replacement of the obsolete outlet. 11. Protect the power cord
from being walked on or pinched, particularly at plugs, convenience
receptacles. The AC mains plug or appliance coupler shall remain readily
accessible for operation. 12. Only use accessories specified by KV2 Audio. 13.
Install the product only with rigging specified by KV2 Audio, or sold with the
loudspeaker. 14. Unplug this loudspeaker during lightning storms or when
unused for long periods of time. 15. Refer all servicing to qualified service
personnel. Servicing is required when the loudspeaker has been damaged in any
way, such as when the power-supply cord or plug has been damaged; liquid has
been spilled or objects have fallen into the loudspeaker; rain or moisture has
entered the loudspeaker; the loudspeaker has been dropped; or when for
undetermined reasons the loudspeaker does not operate normally. 16. Do not
remove front or back panels. Removal of the panel will expose hazardous
voltages. There are no user serviceable parts inside and removable may void
the warranty. 17. An experienced user shall always supervise this professional
audio equipment.
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE PANELS. NO
USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
WARNING: To prevent fire or electric shock, do not expose this equipment to
rain or moisture.
SAFETY SUMMARY To reduce the risk of electric shock, disconnect the
loudspeaker from the AC mains before installing audio cable. Reconnect the
power cord only after making all signal connections. Connect the loudspeaker
to a twopole, three- wire grounding mains receptacle. The receptacle must be
connected to a fuse or circuit breaker. Connection to any other type of
receptacle poses a shock hazard and may violate local electrical codes. Do not
allow water or any foreign object to get inside the loudspeaker. Do not put
objects containing liquid on or near the unit. To reduce the risk of
overheating the loudspeaker, avoid exposing it to direct sunlight. Do not
install the unit near heat-emitting appliances, such as a room heater or
stove. This loudspeaker contains potentially hazardous voltages. Do not
attempt to disassemble the unit. The unit contains no user serviceable parts,
repairs should be performed only by factory trained service personnel.
EX6
· Overview
EX6 – part number KVV 987 139 (230V) KVV 987 138 (115V)
Application
Specifically designed for reproduction of recorded music in near field
applications · Suitable in Fixed installations as full range stand-alone or
with
subwoofers · Excellent peripheral re-enforcement for main KV2 systems ·
Portable PA for Multi-Media applications · Compact floor monitoring solutions
· Domestic and Professional studio monitoring
Introduction
The EX6 is a 2-way high output, active, compact, full-range speaker system.
Design objectives for the EX6 were focused on the expansion of KV2 Audio’s
primary philosophy of speakers systems with increased dynamic range, very high
output and a consistent sound character no matter what the output level. The
EX6 sets new levels of performance for compact cabinets achieved through the
integration of new amplifier, transducer and electronic control technologies
that are closely tied to a passion for taking performance to the next level.
Electronics
Amplifier power, electronic crossovers, phase alignment, equalisation and
speaker protection are integrated into the EX6’s amplifier module.
The EX6’s high frequency compression driver is powered and controlled by KV2
Audio’s standard low intermodulation distortion, Class A/B, push-pull
circuitry, designed to produce the lowest intermodulation distortion possible
and the highest audio quality in the critical mid and high operating bands.
An improved version of KV2 Audio’s current enhancing, Bass driver switching
amplifier has been developed for the EX6. The new configuration improves
overall system efficiency and increases output, allowing passive radiation of
heat to take place through a unique “fin-less” heat sink that can be placed in
any position or direction. Additionally, the EX6 amplifier unit contains an
internally located electric fan that is operated by a temperature sensing
circuit which will slowly bring the fan online as required.
EX6 · Overview
4
EX6 · Overview
Acoustic Components
KV2 Audio has developed a revolutionary woofer technology called Trans-CoilTM.
The woofer has two coils, a standard voice coilassembly and a second coil
placed directly onthe neodymium magnetic circuit’s pole piece.This technology
eliminates voice coil inductance resulting in a flat impedance response above
the resonance point and achieves faster transient response through increased
force and control of the moving mass. It also linearises acoustic and
electrical phase response, reduces harmonic distortion and increases power
transfer and transducer speed. Through this technology, the speaker now
behaves like both a woofer at lower frequencies and like a mid-range at higher
frequencies allowing a seamless transition to take place at the crossover
frequency. The EX6’s patent pending NVPD neodymium compression driver is
loaded on a constant directivity horn designed for smooth, wide dispersion
performance. More importantly, it has also been designed to precisely match
the power response of the woofer at the crossover frequency, a crucial design
objective that ensures smooth transition and minimizes anomalies. The EX6 horn
design is based on constant- directivity geometry with an emphasis on
generating very low air distortion artifacts, maintaining low transducer
compression ratios, high output and wide dispersion (100° x 100°). The horn is
an injected molded aluminium part that functions as a heat dissipater for the
compression driver’s neodymium magnetic motor structure.
Enclosure Design
The EX6 is a very compact, asymmetrical geometry enclosure design allowing it
to be used in a variety of applications. A specially moulded aluminium handle
was designed and fitted to the top of the cabinet. It functions as the
principle pick up handle as well as providing several fixed installation and
hanging solutions. It has a centrally located M10 hang point as well as four
additional M6 bracket points found underneath the KV2 logo. The handle’s M10
point is used alongside asimilar M10 point on the bottom of the box when
utilising an EX6 Horizontal Bracket. Four principal mounting bolts also
provide an OmnimountTM bracket point. There are two side-mounted M10 hang
points that can be used with the EX6 Vertical Bracket or eyebolts. The
optional Pole mount adaptor sits over the two lugs on the rear of the cabinet
and slides upwards-locking into place and supporting the bottom and rear of
the cabinet.
5
EX6 · Overview
EX6 · AC Power Requirements
AC Power
The EX6 uses a PowerCon 3-pole AC main system with locking connectors to
prevent accidental disconnection. The main AC connector (blue) serves as the
power input. The EX6 operates in either 115V or 230V modes. Althoug pre-
configured at the factory, the unit’s operating voltage mode can bechanged in
the field.
Voltage Requirements
The EX6 operates safely and without audio discontinuity if the AC voltage
stays within the operating window of 100V-130V in 115V mode and 200V-250V when
working in 230V mode, at 50 or 60Hz. If the On LED does not illuminate or the
system does not respond to audio input, remove AC power immediately. Verify
that the voltage is within the proper range. If the problem persists, please
contact KV2 Audio or an authorized service center. If the voltage drops below
the low boundary of its safe operating range, the loudspeaker will shut down
if the voltage does not rise above the low boundary before storage circuits
are depleted. How long the loudspeaker will continue to function during
brownout depends on the amount of voltage drop and the audio source level
during the drop. If the voltage increases above the upper boundary of the
range, the power supply can be damaged. It is recommended that the voltage
supply be within the rated voltage window. This ensures that AC voltage
variations from the service entry -or peak voltage drops due to cable runs –
do not cause the amplifier to cycle on and off or cause damage to the power
supply. For best performance, the AC cable voltage drop should not exceed 10
volts, or 10 percentat 115 volts and 5 percent at 230 volts. Make sure that
even with the AC voltage drop, the AC voltage always stays within recommended
operating ranges. The minimum electrical service amperage required by an EX6
speaker system is the sum of each loudspeaker’s maximum continuous rms
current. An additional 50 percent above that amperage is recommended to
prevent peak voltage drops at the service entry.
The Power Connector
The EX6 requires a grounded outlet. It is very important that the loudspeaker
AC supply be properly grounded in order to operate safely and properly. Use
the PowerCon AC cable-wiring diagram overleaf to create inter-national or
special-purpose power connectors:
Power connector assembly
6
EX6 · AC Power Requirements
EX6 · AC Power Requirements
Current Requirements
Each EX6 requires approximately 2.5 Amps max at 115V AC for proper operation.
This allows up to six EX6’s to be powered from one 15 A breaker at 115V and up
to twelve EX6’s at 230V.
The EX6 presents a dynamic load to the AC mains, which causes the amount of
current to fluctuate depending on quiet or loud operating levels. Since
different cables and circuit breakers heat up at varying rates, it is
essential to understand the types of current ratings and how they correspond
to circuit breaker and cable specifications.
The maximum long-term continuous current is the maximum rms current during a
period of at least ten seconds. It is used to calculate the temperature rise
in cables, in order to select a cable size and gauge that conforms to
electrical code standards. It is also used to select the rating for slow-
reacting thermal breakers.
The burst current is the maximum rms current during a period of approximately
one second, used to select the rating of most magnetic breakers and to
calculate the peak voltage drop in long AC cables according to the formula: V
pk (drop) = I pk x R (cable total)
The ultimate short-term peak current is used to select the rating of fast
reacting magnetic breakers. Use the table below as a guide when selecting
cable gauge size and circuit breaker ratings for your operating voltage.
Current Draw Max Long Term Continuous Burst Current Short Term Peak
115V Mode 2.5 A rms 3.75 A rms 10 A peak
230V Mode 1.25 A rms 1.85 A rms 5 A peak
AC Cable Color Coding
If the colours referred to in the diagram don’t correspond to the terminals in
your plug, use the following guidelines: Connect the blue wire to the terminal
marked with a N or coloured black. Connect the brown wire to the terminal
marked with a L or coloured red. Connect the green and yellow wire to the
terminal marked with a E or coloured green or green and yellow.
EX6 · AC Power Requirements
Power cable color coding The EX6 requires a ground connection. Always use a
grounded outlet and plug.
7
EX6 · Audio Signal
The EX6 Control Panel
The EX6 features an easy to use control panel featuring AC power in, audio
input and output, level control, LED status light and a High Pass filter.
EX6 Rear panel
Audio Input and Output
The EX6 uses a balanced, female XLR connector for the audio input connector,
and a male XLR connector to provide through output signal. The through output
connector, wired in parallel to the audio input, will continue to provide the
input signal if the EX6 is turned off. The audio input circuit presents a 20 k
balanced input impedance to a three-pin XLR connector with the following
connections:
Main input
Through output
Pin 1 – Ground Pin 2 – Signal (+) Pin 3 – Signal (-)
Case – Earth (AC) ground and chassis
Audio signal can be daisy-chained using the through output connector on the
input panel. A single source can drive multiple EX6 speakers with a paralleled
input loop. If you are driving multiple EX6’s make certain that the source
device can drive the total load impedance presented by the paralleled input
circuits.
The audio source must be capable of producing a minimum of 0 dB (0.775V volts
rms) to produce the maximum peak SPL over the operating bandwidth of the
loudspeaker. To avoid distortion from the source, make sure the source
equipment provides an adequate drive circuit design for the total paralleled
load impedance presented by the speakers. The input impedance for a single
loudspeaker is 20 k. If “n” represents the number of EX6 loudspeakers in a
system, paralleling the inputs of n loudspeakers will produce a balanced input
load of 20 k divided by “n”.
If the loudspeaker produces noises such as hiss and popping, disconnect the
audio cable from the loudspeaker, if the noise stops, then most likely the
problem is not with the loudspeaker. Check the audio cable, source, and AC
power for the source of the problem.
EX6 · Audio Signal
8
EX6 · Audio Signal
Ensure that all cabling carrying signal to multiple amplifiers and active
speaker systems is wired correctly. Make sure that the polarity has not been
reversed. Reversed polarity can cause severe degradation in frequency response
and can also impact the dispersion characteristics of the speaker.
Power On / Signal LED
This LED turns green when the speaker is turned ON. The light will turn yellow
when signal is present.
Low Cut Switch
The EX6 features a 90 Hz High Pass Filter. Pressing the button engages this
filter allowing the speaker to reproduce frequencies only above 90Hz
Limiter
The EX6 employs a protection system based on rms limiting of the amplifiers.
This type of protection strategy allows the speaker to operate safely under
overload conditions. When the rms “limiter” engages, the output level of both
amplifiers is reduced to a safe operating level. This type of protection
allows the frequency response of the system to remain unchanged as the level
is lowered. By not compressing or limiting peak signal, dynamics also remain
unchanged. The control objective is to regulate the operating temperature of
the transducers magnetic circuits long term. This ensures no impact on
performance due to power compression and allows the components to retain their
ability to reproduce high dynamics. When overdriven the rms limiter will
disengage only if the input level is turned down.
Thermal protection
In the unlikely event of over heating the speaker system will shut down. You
can expect for the system to be down for at least 2-3 minutes depending on the
ambient temperature and whether the system is being exposed to direct sun
light. The EX6 features a fin-less heatsink that allows it to operate in any
position. There is also an internal fan located inside the amplifier module.
The fan speed is dependent on two factors; the temperature of the heat sink
and the output level of the speaker. As temperature increases, so does fan
speed. As audio level increases, fan speed also increases as a preventative
measure designed to keep the heat sink temperature low. Under normal operating
conditions, the fan noise remains inaudible. Please contact KV2 Audio or a
local service representative should the system enter a thermal condition under
normal operating conditions.
Transportation
To keep your EX6 speakers in optimum condition we recommend transportation in
an optional KV2 Audio EX6 padded nylon cover (EX6CVR) or a professional road
case.
9
EX6 · Audio Signal
EX6 · Specifications
Specifications
System Acoustic Perfomance Max SPL Long-term Max SPL Peak -3dB Response -10dB
Response Crossover Point
High Frequency Section High Horn Coverage Horizontal / Vertical Throat Exit
Diameter / Diaphragm Size Diaphragm Material Magnet Type
High Frequency Amplifier Specification Type Rated Continuous Power Distortion
Operating Bandwidth
Low Frequency Section Acoustic Design Woofer Size / Voice Coil Diameter /
Design Diaphragm Material Magnet Type
Low Frequency Amplifier Specification Type Rated Continuous Power Distortion
Operating Bandwidth
Signal Input Input Sensitivity Input Impedance
Power Power Connector Operating Voltage Range Recommended Amperage
Cabinet Cabinet Material Handles Pole Mount Color
Physical Dimensions Height Width Depth Weight
117dB 123dB 68Hz to 20kHz 62Hz to 28kHz 2.0kHz
100° x 100° 1″ / 1.75″ Nitride Titanium Neodymium
Class AB Push-Pull 20W <0.05% 2.0kHz to 28kHz
Front Loaded, Bass Reflex 6″ / 1.75″ / Trans Coil Epoxy Reinforced Cellulose
Neodymium
High Efficiency Switching 180W <0.05% 62Hz to 2.0kHz
1V RMS 20 k
Neutrik PowerCon® 100 to 120V @ 60Hz | 230 to 250V @ 50Hz | 2.5A 115V | 1.25A
230V
Baltic birch 1 Optional – Stand Adapter EX6 “Orange peeled” Matt Black or any
RAL
395 mm (15.55″) 220 mm (8.66″) 274 mm (10.78″) 12 kg (26.4lbs)
EX6 · Specifications
10
EX6 · Frequency characteristics
Frequency response
EX6 · Frequency characteristics
Horizontal Polarplots
73Hz – 250Hz
500Hz – 2kHz
4kHz – 16kHz
73Hz 125Hz 250Hz
Vertical Polarplots
73Hz – 250Hz
500Hz 1kHz 2kHz
500Hz – 2kHz
4kHz 8kHz 16kHz
4kHz – 16kHz
11
73Hz 125Hz 250Hz
500Hz 1kHz 2kHz
4kHz 8kHz 16kHz
EX6 · Using Multiple Boxes
Using Multiple Boxes
Fig. A
Best quality
Poor quality reduced output
Good quality where 2 cabinets must be used
Poor quality reduced output
minimum
100°
Good quality with 200° coverage
Fig. B
Fig. C
KV2 speakers are far more accurate, defined and phase coherent than virtually any other loudspeaker on the market. This very defined phase accuracy comes into play when trying to stack the speakers. It is very important not to use KV2 Audio Mid-High boxes directly side by side. (Fig. A) This will produce a poor quality sound cancelling out perfectly, which reduces overall output. Defined by the way our ears work, their position on our heads and the brain’s understanding of the signals they produce, each ear will hear two sources in the horizontal plane very close together, but very slightly misaligned in arrival time. With our ears positioned on each side of our head, rather than on the top and bottom, they are very good at pinpointing precisely a sound in the Horizontal plane (i.e. it’s exact position left to right in the sound field). Vertically (trying to pin point sound up and down) they are far less accurate and have a greater tolerance for error. Recieving multiple signals so phase coherent, but misaligned horizontally, leads the brain to get confused, which in turn leads it to interpret a confused poor quality, low intelligibility sound. KV2 exploits the additional vertical tolerance that the brain has by only stacking multiple cabinets vertically, as do modern Line arrays, but KV2 still keeps as close as possible to the theory of point source by using a maximum of two cabinets together, keeping the horns as far apart as possible. (Fig. B) This reduces the cancellations that most line arrays suffer from particularly in the high frequencies. The only exception to this maximum of two cabinets would be in a down fill / side fill application where an additional cabinet can be deployed but must be separated from the main forward firing system by an amount of degrees equivalent to the vertical or horizontal dispersion of that speaker. (Fig. C) Combining boxes and building systems in this way will give the maximum overall output, best audio quality and consistent, even coverage.
EX6 · Using Multiple Boxes
12
EX6 · Drawings
Drawings
13
EX6 · Drawings
EX26
· Overview
EX26 – part number KVV 987 164 (230V) KVV 987 165 (115V)
Application
Purposely designed as a stand-alone unit for extremely high quality vocal
reproduction and output
· Church and houses of worship · Conference and presentations · Front of stage
and balcony infill · Full range portable PA when used with subwoofers for
larger
Multi-Media applications and small live music applications
Introduction
The EX26 is a 2-way high output, active, compact, Vocal speaker system. Design
objectives for the EX26 were focused on the expansion of KV2 Audio’s primary
philosophy of speakers systems with increased dynamic range, very high output
and a consistent sound character no matter what the output level. The EX26
sets new levels of performance for compact cabinets achieved through the
integration of new amplifier, transducer and electronic control technologies
that are closely tied to a passion for taking performance to the next level.
Electronics
Amplifier power, electronic crossovers, phase alignment, equalisation and
speaker protection are integrated into the EX26’s amplifier module.
The EX26’s high frequency compression driver is powered and controlled by KV2
Audio’s standard low intermodulation distortion, Class A/B, push-pull
circuitry, designed to produce the lowest intermodulation distortion possible
and the highest audio quality in the critical mid and high operating bands.
An improved version of KV2 Audio’s current enhancing, bass driver switching
amplifier has been developed for the EX26. The new configuration improves
overall system efficiency and increases output allowing passive radiation of
heat to take place through a unique “finless” heat sink that can be placed in
any position or direction. Additionally, the EX26 amplifier unit contains an
internally located electric fan that is operated by a temperature sensing
circuit which will slowly bring the fan online as required.
EX26 · Overview
14
EX26 · Overview
Acoustic Components
The EX26’s patent pending NVPD neodymium compression driver is loaded on a
constant directivity horn designed for smooth, wide dispersion performance.
More importantly, it has also been designed to precisely match the power
response of the woofers at the crossover frequency, a crucial design objective
that ensures smooth transition and minimizes anomalies. The EX26 horn design
is based on constantdirectivity geometry with an emphasis on generating very
low air distortion artifacts, maintaining low transducer compression ratios,
high output and wide dispersion (100° x 100°). The horn is an injected molded
aluminium part that functions as a heat dissipater for the compression
driver’s neodymium magnetic motor structure.
Enclosure Design
The EX26 is a very compact, asymmetrical geometry enclosure design allowing it
to be used in a variety of applications. A specially moulded aluminium handle
was designed and fitted to the top of the cabinet. It functions as the
principle pick up handle as well as providing several fixed installation and
hanging solutions. It has a centrally located M10 hang point as well as four
additional M6 bracket points found underneath the KV2 logo.
15
EX26 · Overview
EX26 · AC Power Requirements
AC Power Requirements
The EX26 is an advanced self-powered loudspeaker with on-board amplification
and control systems. Understanding power distribution, voltage and current
requirements, as well as electrical safety issues, is critical to the safe
operation of the EX26.
AC Power
The EX26 uses a PowerCon 3-pole AC main system with locking connectors to
prevent accidental disconnection. The main AC connector (blue) serves as the
power input.
The EX26 operates in either 115V or 230V modes. Although pre-configured at the
factory, the unit’s operating voltage mode can be changed in the field.
Voltage Requirements
The EX26 operates safely and without audio discontinuity if the AC voltage
stays within the operating window of 100V-130V in 115V mode and 200V-250V when
working in 230V mode, at 50 or 60Hz.
If the On LED does not illuminate or the system does not respond to audio
input, remove AC power immediately. Verify that the voltage is within the
proper range. If the problem persists, please contact KV2 Audio or an
authorized service center.
If the voltage drops below the low boundary of its safe operating range, the
loudspeaker will shut down if the voltage does not rise above the low boundary
before storage circuits are depleted. How long the loudspeaker will continue
to function during brownout depends on the amount of voltage drop and the
audio source level during the drop. If the voltage increases above the upper
boundary of the range, the power supply can be damaged.
It is recommended that the voltage supply be within the rated voltage window.
This ensures that AC voltage variations from the service entry – or peak
voltage drops due to cable runs – do not cause the amplifier to cycle on and
off or cause damage to the power supply.
For best performance, the AC cable voltage drop should not exceed 10 volts, or
10 percent at 115 volts and 5 percent at 230 volts.
Make sure that even with the AC voltage drop, the AC voltage always stays
within recommended operating ranges. The minimum electrical service amperage
required by an EX26 speaker system is the sum of each loudspeaker’s maximum
continuous rms current. An additional 50 percent above that amperage is
recommended to prevent peak voltage drops at the service entry.
The Power Connector
The EX26 requires a grounded outlet. It is very important that the loudspeaker
AC supply be properly grounded in order to operate safely and properly. Use
the PowerCon AC cable wiring diagram overleaf to create international or
special-purpose power connectors:
Power connector assembly
16
EX26 · AC Power Requirements
EX26 · AC Power Requirements
Current Requirements
Each EX26 requires approximately 4 Amps max at 115V AC for proper operation.
This allows up to three EX26’s to be powered fromn one 15 A breaker at 115V
and up to seven EX26’s at 230V.
The EX26 presents a dynamic load to the AC mains, which causes the amount of
current to fluctuate depending on quiet or loud operating levels. Since
different cables and circuit breakers heat up at varying rates, it is
essential to understand the types of current ratings and how they correspond
to circuit breaker and cable specifications.
The maximum long-term continuous current is the maximum rms current during a
period of at least ten seconds. It is used to calculate the temperature rise
in cables, in order to select a cable size and gauge that conforms to
electrical code standards. It is also used to select the rating for slow-
reacting thermal breakers.
The burst current is the maximum rms current during a period of approximately
one second, used to select the rating of most magnetic breakers and to
calculate the peak voltage drop in long AC cables according to the formula: V
pk (drop)= I pk x R (cable total)
The ultimate short-term peak current is used to select the rating of fast
reacting magnetic breakers. Use the table below as a guide when selecting
cable gauge size and circuit breaker ratings for your operating voltage.
Current Draw Max Long Term Continuous Burst Current Short Term Peak
115V Mode 4 A rms 6 A rms 16 A peak
230V Mode 2 A rms 4 A rms 8 A peak
AC Cable Color Coding
If the colours referred to in the diagram don’t correspond to the terminals in
your plug, use the following guidelines: Connect the blue wire to the terminal
marked with a N or coloured black. Connect the brown wire to the terminal
marked with a L or coloured red. Connect the green and yellow wire to the
terminal marked with a E or coloured green or green and yellow.
EX26 · AC Power Requirements
Power cable color coding The EX26 requires a ground connection. Always use a
grounded outlet and plug.
17
EX26 · Audio Signal
The EX26 Control Panel
The EX26 features an easy to use control panel featuring AC power in, audio
input and through output, level control, LED status light and a High Pass
filter.
EX26 Rear panel
Audio Input and Output
The EX26 uses a balanced, female XLR connector for the audio input connector,
and a male XLR connector to provide through output signal. The through output
connector, wired in parallel to the audio input, will continue to provide the
input signal if the EX26 is turned off. The audio input circuit presents a 20
k balanced input impedance to a three-pin XLR connector with the following
connections:
Main input
Through output
Pin 1 – Ground Pin 2 – Signal (+) Pin 3 – Signal (-)
Case – Earth (AC) ground and chassis
Audio signal can be daisy-chained using the through output connector on the
input panel. A single source can drive multiple EX26 speakers with a
paralleled input loop. If you are driving multiple EX26’s make certain that
the source device can drive the total load impedance presented by the
paralleled input circuits.
The audio source must be capable of producing a minimum of 1.0V volts rms to
produce the maximum peak SPL over the operating bandwidth of the loudspeaker.
To avoid distortion from the source, make sure the source equipment provides
an adequate drive circuit design for the total paralleled load impedance
presented by the speakers. The input impedance for a single loudspeaker is 20
k. If “n” represents the number of EX26 loudspeakers in a system, paralleling
the inputs of n loudspeakers will produce a balanced input load of 20 k
divided by “n”.
If the loudspeaker produces noises such as hiss and popping, disconnect the
audio cable from the loudspeaker, if the noise stops, then most likely the
problem is not with the loudspeaker. Check the audio cable, source, and AC
power for the source of the problem.
Ensure that all cabling carrying signal to multiple amplifiers and active
speaker systems is wired correctly. Make sure that the polarity has not been
reversed. Reversed polarity can cause severe degradation in frequency response
and can also impact the dispersion characteristics of the speaker.
Important information!
Please be aware and notified that this product EX26 with a designated P’ Serial Number onwards now comes with a modified Polarity that will appear reversed when compared to older existing versions of this model EX26. This has been done to ensure that when used with other EX models within the range, there will not be any difference in polarity response between models. If you have existing EX26 models with a Serial Number that has a letter preface prior to the
P’ designation, applying a simple reversed XLR connector
input lead crossing pins 2 &3 at one side will correct this when in use.
EX26 · Audio Signal
18
EX26 · Audio Signal
Power On / Signal LED
This LED turns green when the speaker is turned ON. The light will turn yellow
when signal is present.
Low Cut Switch
The EX26 features a 90Hz High Pass Filter. Pressing the button engages this
filter allowing the speaker to reproduce frequencies only above 90Hz.
Limiter
The EX26 employs a protection system based on rms limiting of the amplifiers.
This type of protection strategy allows the speaker to operate safely under
overload conditions. When the rms “limiter” engages, the output level of both
amplifiers is reduced to a safe operating level. This type of protection
allows the frequency response of the system to remain unchanged as the level
is lowered. By not compressing or limiting peak signal, dynamics also remain
unchanged. The control objective is to regulate the operating temperature of
the transducers magnetic circuits long term. This ensures no impact on
performance due to power compression and allows the components to retain their
ability to reproduce high dynamics. When overdriven the rms limiter will
disengage only if the input level is turned down.
Thermal Protection
In the unlikely event of over heating the speaker system will shut down. You
can expect for the system to be down for at least 2-3 minutes depending on the
ambient temperature and whether the system is being exposed to direct sun
light. The EX26 features a fin-less heatsink that allows it to operate in any
position. There is also an internal fan located inside the amplifier module.
The fan speed is dependent on two factors; the temperature of the heat sink
and the output level of the speaker. As temperature increases, so does fan
speed. As audio level increases, fan speed also increases as a preventative
measure designed to keep the heat sink temperature low. Under normal operating
conditions, the fan noise remains inaudible. Please contact KV2 Audio or a
local service representative should the system enter a thermal condition under
normal operating conditions.
Transportation
To keep your EX26 speakers in optimum condition we recommend transportation in
an optional KV2 Audio EX26 padded nylon cover (EX26CVR) or a professional road
case.
19
EX26 · Audio Signal
EX26 · Specifications
Specifications
System Acoustic Perfomance Max SPL Long-term Max SPL Peak -3dB Response -10dB
Response Crossover Point
High Frequency Section Acoustic Design High Horn Coverage Horizontal /
Vertical Throat Exit Diameter / Diaphragm Size Diaphragm Material Magnet Type
High Frequency Amplifier Specification Type Rated Continuous Power Distortion
Operating Bandwidth
Low Frequency Section Acoustic Design Woofer Size / Voice Coil Diameter Magnet
Type Diaphragm Material
Low Frequency Amplifier Specification Type Rated Continuous Power Distortion
Operating Bandwidth
Signal Input Input Sensitivity Input Impedance
Power Power Connector Operating Voltage Range Recommended Amperage
Cabinet Cabinet Material Handles Pole Mount Color
Physical Dimensions Height Width Depth Weight
124dB 130dB 80Hz to 20kHz 65Hz to 28kHz 2.5kHz
Horn Loaded 100° x 100° 1″ / 1.75″ Nitride Titanium Neodymium
Class AB Push-Pull 20W <0.05% 2.5kHz to 28kHz
Front Loaded, Bass Reflex 6″ / 1.75″ Neodymium Epoxy Reinforced Cellulose
High efficiency, Current-enhancing switch mode 350W <0.05% 68Hz to 2.5kHz
1.0V RMS 20 k
Neutrik PowerCon® 100 to 120V @ 60Hz | 230 to 250V @ 50Hz 3.15A 115V | 1.6A
230V
Baltic birch 1 35 mm “Orange peeled” Matt Black or any RAL
570 mm (22.44″) 220 mm (8.66″) 274 mm (10.78″) 16 kg (35.2lbs)
20
EX26 · Specifications
EX26 · Frequency characteristics
Frequency response
EX26 · Frequency characteristics
Horizontal Polarplots
73Hz – 250Hz
500Hz – 2kHz
4kHz – 16kHz
73Hz 125Hz 250Hz
Vertical Polarplots
73Hz – 250Hz
500Hz 1kHz 2kHz
500Hz – 2kHz
4kHz 8kHz 16kHz
4kHz – 16kHz
21
73Hz 125Hz 250Hz
500Hz 1kHz 2kHz
4kHz 8kHz 16kHz
EX26 · Using Multiple Boxes
Using Multiple Boxes
Best quality
Poor quality reduced output
Fig. B
Fig. A
Where 2 cabinets must be used
EX26 · Using Multiple Boxes
Fig. C
minimum
100°
Good quality whit 200° coverage
Poor quality reduced output
KV2 speakers are far more accurate, defined and phase coherent than virtually any other loudspeaker on the market. This very defined phase accuracy comes into play when trying to stack the speakers. It is very important not to use KV2 Audio Mid-High boxes directly side by side. (Fig. A) This will produce a poor quality sound cancelling out perfectly, which reduces overall output. Defined by the way our ears work, their position on our heads and the brain’s understanding of the signals they produce, each ear will hear two sources in the horizontal plane very close together, but very slightly misaligned in arrival time. With our ears positioned on each side of our head, rather than on the top and bottom, they are very good at pinpointing precisely a sound in the Horizontal plane (i.e. it’s exact position left to right in the sound field). Vertically (trying to pin point sound up and down) they are far less accurate and have a greater tolerance for error. Recieving multiple signals so phase coherent, but misaligned horizontally, leads the brain to get confused, which in turn leads it to interpret a confused poor quality, low intelligibility sound. KV2 exploits the additional vertical tolerance that the brain has by only stacking multiple cabinets vertically, as do modern Line arrays, but KV2 still keeps as close as possible to the theory of point source by using a maximum of two cabinets together, keeping the horns as far apart as possible. (Fig. B) This reduces the cancellations that most line arrays suffer from particularly in the high frequencies. The only exception to this maximum of two cabinets would be in a down fill / side fill application where an additional cabinet can be deployed but must be separated from the main forward firing system by an amount of degrees equivalent to the vertical or horizontal dispersion of that speaker. (Fig. C ) Combining boxes and building systems in this way will give the maximum overall output, best audio quality and consistent, even coverage.
22
EX26 · Drawings
Drawings
23
EX26 · Drawings
EX10 · Overview
EX10 – part number KVV 987 097 (250V) KVV 987 011 (230V) KVV 987 012 (115V)
Application
Specifically designed for high quality, high output multi-tasking, portable
music playback and live performance in small applications
· Full range stand-alone solution or scalable to larger capabilities with
subwoofers for large conference, meetings and small to medium performance
venues
· Multi-purpose fixed installations · Personal monitoring · Infill for larger
main KV2 Audio systems
EX10
· Overview
Introduction
The EX10 is a 2-way high output, active, compact, full-range speaker system.
Design objectives for the EX10 were focused on the expansion of KV2 Audio’s
primary philosophy of speakers systems with increased dynamic range, very high
output and a consistent sound character no matter what the output level. The
EX10 sets new levels of performance for compact cabinets achieved through the
integration of new amplifier, transducer and electronic control technologies
that are closely tied to a passion for taking performance to the next level.
Electronics
Amplifier power, electronic crossovers, phase alignment, equalization, time
correction and speaker protection are integrated into the EX10’s amplifier
module. On-board electronics ensures fast, easy set up and complete control.
An improved version of KV2 Audio’s switch mode, current enhancing low
frequency amplifier has been developed for the EX10. The new configuration
improves overall system efficiency and increases output, allowing passive
radiation of heat to take place through a unique “fin-less” heat sink that can
be placed in any position or direction. This ensures cool operation in
horizontal or vertical applications. Additionally, the EX10 amplifier unit
contains an internally located electric fan that is operated by a temperature
sensing circuit which will slowly bring the fan online as required in extreme,
high temperature situations.
Months of research were invested into designing circuitry that ensures that
the extreme dynamic range exemplified by the speaker system is maintained even
under clipping conditions. The real test of the EX10’s limits is when it is
exposed to the rigors and demands of live audio playback where consistent
clipping of amplifiers, generation of distortion artifacts, dramatic increases
in the floor and the elimination of dynamic range put the product to an
extreme test.
The EX10’s high frequency compression driver is powered and controlled by KV2
Audio’s standard low intermodulation distortion, Class A/B, push-pull
circuitry, high and mid frequency amplifier design. Metal Oxide Silicon Field
Effect Transistors (MOSFET) are used for the output stage and the compression
driver coupled through a transformer balanced speaker output. The entire
performance strategy for this type of design is based on producing the lowest
intermodulation distortion possible and the highest audio quality in the
critical mid and high operating bands.
24
EX10 · Overview
Acoustic Components
KV2 Audio has developed a revolutionary woofer technology called Trans-CoilTM.
The woofer has two coils, a standard voice coil assembly and a second coil
placed directly on the neodymium magnetic circuit’s pole piece. This
technology eliminates voice coil inductance resulting in a flat impedance
response above the resonance point and achieves faster transient response
through increased force and control of the moving mass. It also linearises
acoustic and electrical phase response, reduces harmonic distortion and
increases power transfer and transducer speed. Through this technology, the
speaker now behaves like both a woofer at lower frequencies and like a mid-
range at higher frequencies allowing a seamless transition to take place at
the crossover frequency. The EX10’s patent pending neodymium compression
driver is loaded on a constant directivity horn designed for smooth, wide
dispersion performance. More importantly, it has also been designed to
precisely match the power response of the woofer at the crossover frequency, a
crucial design objective that ensures smooth transition and minimizes
anomalies. The compression driver is a new, patent pending 1.75- inch titanium
diaphragm design, featuring a complex geometry phase plug that dramatically
lowers distortion, eliminates ring modes and provides clearer, ripple free
performance. The EX10 horn was designed with two primary performance goals.
The mechanical design allows the horn to be rotated 90 degrees, allowing for
complete flexibility in selection of vertical and horizontal system set up.
The horn design is based on constant- directivity geometry with an emphasis on
generating very low air distortion artifacts, maintaining low transducer
compression ratios, high output and wide dispersion (100 x 80). The horn is an
injected molded aluminum part that functions as a heat dissipater for the
compression driver’s neodymium magnetic motor structure.
Enclosure Design
The EX10 is a very compact, asymmetrical geometry enclosure design allowing it
to be used in a variety of applications and featuring a number of
ergonomically designed components that make it lightweight and easy to use. An
extensive set of professional hardware features enables the EX10 to be used in
a variety of environments using an array of industry standard hardware. These
facilitate both portable and fixed installations with a maximum amount of
mounting flexibility. A specially molded aluminum top handle was designed and
fitted to the top of the cabinet. It functions as the principle pick up handle
as well as providing several fixed installation and hanging solutions. It has
a centrally located M10 hang point as well as four additional M6 bracket
points. The handles four principal mounting bolts also provide an OmnimountTM
bracket point. There are two side-mounted M10 hang points that can be used
with brackets or eyebolts.
25
EX10 · Overview
EX10 · AC Power Requirements
AC Power
The EX10 uses a PowerCon 3-pole AC main system with locking connectors to
prevent accidental disconnection. The main AC connector (blue) serves as the
power input. The EX10 operates in either 115V, 230V or 250V modes. Although
pre-configured at the factory, the unit’s operating voltage mode can be
changed in the field.
Voltage Requirements
The EX10 operates safely and without audio discontinuity if the AC voltage
stays within the operating window of 100V-120V in 115V mode, 205V-240V in 230V
mode and 225V-260V when working in 250V mode, at 50 or 60Hz. If the On LED
does not illuminate or the system does not respond to audio input, remove AC
power immediately. Verify that the voltage is within the proper range. If the
problem persists, please contact KV2 Audio or an authorized service center. If
the voltage drops below the low boundary of its safe operating range, the
loudspeaker will shut down if the voltage does not rise above the low boundary
before storage circuits are depleted. How long the loudspeaker will continue
to function during brownout depends on the amount of voltage drop and the
audio source level during the drop. If the voltage increases above the upper
boundary of the range, the power supply can be damaged. It is recommended that
the voltage supply be within the rated voltage window. This ensures that AC
voltage variations from the service entry- or peak voltage drops due to cable
runs do not cause the amplifier to cycle on and off or cause damage to the
power supply. For best performance, the AC cable voltage drop should not
exceed 10 volts, or 10 percent at 115 volts and 5 percent at 230 volts. Make
sure that even with the AC voltage drop, the AC voltage always stays within
recommended operating ranges. The minimum electrical service amperage required
by a EX10 speaker system is the sum of each loudspeaker’s maximum continuous
rms current. An additional 50 percent above the minimum amperage is
recommended to prevent peak volt-age drops at the service entry.
The Power Connector
The EX10 requires a grounded outlet. It is very important that the loudspeaker
AC supply be properly grounded in order to operate safely and properly. Use
the PowerCon AC cable-wiring diagram on page 27 to create international or
special-purpose power connectors:
Power connector assembly
26
EX10 · AC Power Requirements
EX10 · AC Power Requirements
Current Requirements
Each EX10 requires approximately 5 Amps max at 115V AC for proper operation.
This allows up to three EX10’s to be powered from one 15 A breaker at 115V and
up to 6 loudspeakers at 230V or 250V.
The EX10 presents a dynamic load to the AC mains, which causes the amount of
current to fluctuate depending on quiet or loud operating levels. Since
different cables and circuit breakers heat up at varying rates, it is
essential to understand the types of current ratings and how they correspond
to circuit breaker and cable specifications.
The maximum long-term continuous current is the maximum rms current during a
period of at least ten seconds. It is used to calculate the temperature rise
in cables, in order to select a cable size and gauge that conforms to
electrical code standards. It is also used to select the rating for slow-
reacting thermal breakers.
The burst current is the maximum rms current during a period of approximately
one second, used to select the rating of most magnetic breakers and to
calculate the peak voltage drop in long AC cables according to the formula: V
pk (drop)= I pk x R (cable total)
The ultimate short-term peak current is used to select the rating of fast
reacting magnetic breakers. Use the table below as a guide when selecting
cable gauge size and circuit breaker ratings for your operating voltage.
Current Draw Max Long Term Continuous Burst Current Short Term Peak
115V Mode 5 A rms 7.5 A rms 20 A peak
230V, 250V 2.5 A rms 5 A rms 10 A peak
AC Cable Color Coding
If the colors referred to in the diagram don’t correspond to the terminals in
your plug, use the following guidelines: Connect the blue wire to the terminal
marked with a N or colored black. Connect the brown wire to the terminal
marked with a L or colored red. Connect the green and yellow wire to the
terminal marked with a E or colored green or green and yellow.
EX10 · AC Power Requirements
Power cable color coding The EX10 requires a ground connection. Always use a
grounded outlet and plug.
27
EX10 · Audio Signal
The EX10 Control Panel
The EX10 features an easy to use rear control panel with audio input and
output, level control, LED status lights and a low pass filter that can be
engaged when the loudspeaker is used as a stage monitoring device.
EX10 · Audio Signal
EX10 Rear panel
Audio Input and Output
The EX10 uses a balanced, female XLR connector for the audio input connector,
and a male XLR connector to provide through output signal. The through output
connector, wired in parallel to the audio input, will continue to provide the
input signal if the EX10 is turned off. The audio input circuit presents a 20
kOhm balanced input impedance to a three-pin XLR connector with the following
connectors:
Main input
Through output
Pin 1 – Ground Pin 2 – Signal (+) Pin 3 – Signal (-)
Case – Earth (AC) ground and chassis
Audio signal can be daisy-chained using the through output connector on the
input panel. A single source can drive multiple EX10 speakers with a
paralleled input loop. If you are driving multiple EX10’s in an ar ray, make
certain that the source device can drive the total load impedance presented by
the paralleled input circuit of the array. The audio source must be capable of
producing a minimum of 20 dB volts (10 volts rms into 600 ohms) to produce the
maximum peak SPL over the operating bandwidth of the loudspeaker. To avoid
distortion from the source, make sure the source equipment provides an
adequate drive circuit design for the total paralleled load impedance
presented by the array. The input impedance for a single loudspeaker is 20
kOhms. If “n” represents the number of EX10 loudspeakers in a system,
paralleling the inputs of n loudspeakers will produce a balanced input load of
20 kOhms divided by “n”.
Most source equipment is safe for driving loads no smaller than 10 times the
source’s output impedance. For example, cascading an array of 10 units
consisting of EX10 speak – ers produces an input impedance of 2000 ohms
(20kOhms divided by 10). The source equipment should have an output impedance
of 200 Ohms or less. This is also true when connecting EX10’s in parallel
(loop out) with other KV2 Audio amplifiers and active speakers and subwoofers.
If the loudspeaker produces noises such as hiss and popping, disconnect the
audio cable from the loudspeaker, if the noise stops, then most likely the
problem is not with the loudspeaker. Check the audio cable, source, and AC
power for the source of the problem.
Ensure that all cabling carrying signal to multiple amplifiers and active
speaker systems is wired correctly. Make sure that the polarity has not been
reversed. Reversed polarity can cause severe degradation in frequency response
and can also impact the dispersion characteristics of the speaker.
28
EX10 · Audio Signal
Amplifiers and Acoustic Filters
The EX10 is powered by two separate power amplifiers specifically designed and
optimized for the low frequency and high frequency drivers. The control system
in the EX10 processes the audio signal through a series of electronic filters
and circuits providing equalization, crossover filters, phase adjustment,
thermal and overdrive protection.
The EX10 employs a protection system based on rms limiting of the amplifiers.
This type of protection strategy allows the speaker to operate safely under
overload conditions. When the rms “limiter” engages, the output level of both
amplifiers is reduced to a safe operating level. This type of protection
allows the phase response of the system to remain unchanged as the level is
lowered. By not compressing or limiting peak signal, dynamics also remain
unchanged. The control objective is to regulate the operating temperature of
the transducers magnetic circuits log term. This ensures no impact on
performance due to power compression and allows the components to retain their
ability to reproduce high dynamics.
LED Status Lights
The EX10 control panel uses two distinct LED’s to provide operating status
information.
Power On / Limiter LED
This LED turns green when the speaker is turned ON. The light will continue to
be green during normal operation of the speaker system. Should the rms
limiting system be engaged due to overdriving of the EX10, the LED will change
color from green to yellow. The audible effect of the rms limiter is a
lowering of overall output level. The rms limiter will disengage only if the
input level is turned down..
Signal / Thermal LED
This LED turns green when there is audio signal present in the EX10. This
signal indicator can be used to troubleshoot wiring problems. The LED will
change from green to yellow under a thermal condition resulting from
overheating of the amplifier system. Under this condition, the speaker system
will shut down. You can expect for the system to be down for at least 2-3
minutes depending the ambient temperature and whether the system is being
exposed to direct sun light.
The EX10 features a finless heatsink that allows it to operate in any
position. There is also an internal fan located inside the amplifier module.
The fan speed is dependent on two factors; the temperature of the heat sink
and the output level of the speaker. As temperature increases, so does fan
speed. As audio level increases, fan speed also increases as a preventative
measure designed to keep the heat sink temperature low. Under normal operating
conditions, the fan noise remains inaudible. Please contact KV2 Audio or a
local service representative should the system enter a thermal condition under
normal operating conditions.
Stage Monitor Filter
The EX10 features a 90 Hz Monitor Filter control. Depressing the button
engages a low pass audio filter allowing the speaker to be effectively used to
reproduce frequencies above 90Hz. When using EX10 as a stage monitor, the horn
should be rotated 90º.
29
EX10 · Audio Signal
EX10 · Specifications
Specifications
System Acoustic Perfomance Max SPL Long-term Max SPL Peak -3dB Response -10dB
Response Crossover Point
High Frequency Section Acoustic Design High Horn Coverage Horizontal /
Vertical Rotatable Horn Throat Exit Diameter / Diaphragm Size Diaphragm
Material Magnet Type
High Frequency Amplifier Specification Type Rated Continuous Power Distortion
Operating Bandwidth
Low Frequency Section Acoustic Design Woofer Size / Voice Coil Diameter /
Design Diaphragm Material Magnet Type
Low Frequency Amplifier Specification Type Rated Continuous Power Distortion
Operating Bandwidth
Signal Input Input Sensitivity Input Impedance
Power Power Connector Operating Voltage Range Recommended Amperage
Cabinet Cabinet Material Handles Pole Mount Color
Physical Dimensions Height Width Depth Weight
126dB 132dB 68Hz to 20kHz 55Hz to 28kHz 1.6kHz
Horn Loaded 100° x 80° YES 1″ / 1.75″ Titanium Neodymium
Class AB Push-Pull 50W <0.05% 1.6kHz to 28kHz
Front Loaded, Bass Reflex 10″ / 2.5″ / Trans Coil Epoxy Reinforced Cellulose
Neodymium
High efficiency, Current-enhancing switch mode 450W <0.05% 55Hz to 1.6kHz
0.775V RMS 20 k
Neutrik PowerCon® 100 to 120V@60Hz | 205 to 240V@50Hz | 225 to 260V@50Hz 6A
115V | 3A 230V | 3A 250V
Baltic birch 1 35 mm “Orange peeled” Matt Black or any RAL
514 mm (20.23″) 310 mm (12.20″) 326 mm (12.83″) 22 kg (48.4lbs)
30
EX10 · Specifications
EX10 · Frequency characteristics
Frequency response
EX10 · Frequency characteristics
Horizontal Polarplots
73Hz – 250Hz
500Hz – 2kHz
4kHz – 16kHz
73Hz 125Hz 250Hz
Vertical Polarplots
73Hz – 250Hz
500Hz 1kHz 2kHz
500Hz – 2kHz
4kHz 8kHz 16kHz
4kHz – 16kHz
31
73Hz 125Hz 250Hz
500Hz 1kHz 2kHz
4kHz 8kHz 16kHz
EX10 · Drawings
Drawings
32
EX10 · Drawings
EX28
· Overview
EX28 – part number KVV 987 462 (250V) KVV 987 461 (230V) KVV 987 460 (115V)
Application
Purposely designed as a stand-alone unit for extremely high quality vocal
reproduction and output
· Theatres, Churches and houses of worship · Conference and presentations ·
Front of stage and balcony infill · Full range portable PA when used with
subwoofers for larger
Multi-Media applications and small live music applications
Introduction
The EX28 is a 2.5-way full-range active loudspeaker system that builds on the
success of the EX26 whilst adding further low frequency extension. Its compact
profile makes it ideal for a multitude of FOH and infill applications in
Theatres, Leisure venues, Houses of Worship and Concert Halls, where the
ultimate quality from a discreet loudspeaker solution is required. Two
individually designed 8″ neodymium mid – bass woofers are utilised for
extended low frequency performance, whilst one unit incorporates KV2 Audio SLA
Transcoil technology for improved vocal performance, along with a neodymium
compression driver mounted on a 100° by 80° horn.
Electronics
Amplifier power, electronic crossovers, phase alignment, equalisation and
speaker protection are integrated into the EX28’s amplifier module.
The EX28’s high frequency compression driver is powered and controlled by KV2
Audio’s standard low intermodulation distortion, Class A/B, push-pull
circuitry, designed to produce the lowest intermodulation distortion possible
and the highest audio quality in the critical mid and high operating bands.
An improved version of KV2 Audio’s current enhancing, bass driver switching
amplifier has been developed for the EX28. The new configuration improves
overall system efficiency and increases output allowing passive radiation of
heat to take place through a unique “fin-less” heat sink that can be placed in
any position or direction. Additionally, the EX28 amplifier unit contains an
internally located electric fan that is operated by a temperature sensing
circuit which will slowly bring the fan on-line as required.
EX28 · Overview
33
EX28 · Overview
Acoustic Components
The EX28’s NVPD neodymium compression driver is loaded on a constant
directivity horn designed for smooth, wide dispersion performance. More
importantly, it has also been designed to precisely match the power response
of the woofers at the crossover frequency, a crucial design objective that
ensures smooth transition and minimizes anomalies. The EX28 horn design is
based on constant directivity geometry with an emphasis on generating very low
air distortion artifacts, maintaining low transducer compression ratios, high
output and wide dispersion (100° x 80°). The horn is an injected molded
aluminium part that functions as a heat dissipater for the compression
driver’s neodymium magnetic motor structure.
Enclosure Design
The EX28 is a very compact, asymmetrical geometry enclosure design allowing it
to be used in a variety of applications. A specially moulded aluminium handle
was designed and fitted to the top of the cabinet. It functions as the
principle pick up handle as well as providing fixed installation and hanging
solutions. It has a centrally located M10 hang point.
34
EX28 · Overview
EX28 · AC Power Requirements
AC Power Requirements
The EX28 is an advanced self-powered loudspeaker with on-board amplification
and control systems. Understanding power distribution, voltage and current
requirements, as well as electrical safety issues, is critical to the safe
operation of the EX28.
AC Power
The EX28 uses a PowerCon 3-pole AC main system with locking connectors to
prevent accidental disconnection. The main AC connector (blue) serves as the
power input.
The EX28 operates in either 115V or 230V modes. Although pre-configured at the
factory, the unit’s operating voltage mode can be changed in the field.
Voltage Requirements
The EX28 operates safely and without audio discontinuity if the AC voltage
stays within the operating window of 100V-130V in 115V mode and 200V-250V when
working in 230V mode, at 50 or 60Hz.
If the On LED does not illuminate or the system does not respond to audio
input, remove AC power immediately. Verify that the voltage is within the
proper range. If the problem persists, please contact KV2 Audio or an
authorized service center.
If the voltage drops below the low boundary of its safe operating range, the
loudspeaker will shut down if the voltage does not rise above the low boundary
before storage circuits are depleted. How long the loudspeaker will continue
to function during brownout depends on the amount of voltage drop and the
audio source level during the drop. If the voltage increases above the upper
boundary of the range, the power supply can be damaged.
It is recommended that the voltage supply be within the rated voltage window.
This ensures that AC voltage variations from the service entry – or peak
voltage drops due to cable runs – do not cause the amplifier to cycle on and
off or cause damage to the power supply.
For best performance, the AC cable voltage drop should not exceed 10 volts, or
10 percent at 115 volts and 5 percent at 230 volts.
Make sure that even with the AC voltage drop, the AC voltage always stays
within recommended operating ranges. The minimum electrical service amperage
required by an EX26 speaker system is the sum of each loudspeaker’s maximum
continuous rms current. An additional 50 percent above that amperage is
recommended to prevent peak voltage drops at the service entry.
The Power Connector
The EX28 requires a grounded outlet. It is very important that the loudspeaker
AC supply be properly grounded in order to operate safely and properly. Use
the PowerCon AC cable wiring diagram overleaf to create international or
special-purpose power connectors:
Power connector assembly
35
EX28 · AC Power Requirements
EX28 · AC Power Requirements
Current Requirements
Each EX28 requires approximately 4 Amps max at 115V AC for proper operation.
This allows up to three EX28’s to be powered fromn one 15 A breaker at 115V
and up to seven EX28’s at 230V.
The EX28 presents a dynamic load to the AC mains, which causes the amount of
current to fluctuate depending on quiet or loud operating levels. Since
different cables and circuit breakers heat up at varying rates, it is
essential to understand the types of current ratings and how they correspond
to circuit breaker and cable specifications.
The maximum long-term continuous current is the maximum rms current during a
period of at least ten seconds. It is used to calculate the temperature rise
in cables, in order to select a cable size and gauge that conforms to
electrical code standards. It is also used to select the rating for slow-
reacting thermal breakers.
The burst current is the maximum rms current during a period of approximately
one second, used to select the rating of most magnetic breakers and to
calculate the peak voltage drop in long AC cables according to the formula: V
pk (drop)= I pk x R (cable total)
The ultimate short-term peak current is used to select the rating of fast
reacting magnetic breakers. Use the table below as a guide when selecting
cable gauge size and circuit breaker ratings for your operating voltage.
Current Draw Max Long Term Continuous Burst Current Short Term Peak
115V Mode 4 A rms 6 A rms 16 A peak
230V Mode 2 A rms 4 A rms 8 A peak
AC Cable Color Coding
If the colours referred to in the diagram don’t correspond to the terminals in
your plug, use the following guidelines: Connect the blue wire to the terminal
marked with a N or coloured black. Connect the brown wire to the terminal
marked with a L or coloured red. Connect the green and yellow wire to the
terminal marked with a E or coloured green or green and yellow.
EX28 · AC Power Requirements
Power cable color coding The EX28 requires a ground connection. Always use a
grounded outlet and plug.
36
EX28 · Audio Signal
The EX28 Control Panel
The EX28 features an easy to use control panel featuring AC power in, audio
input and through output, level control, LED status light and a High Pass
filter.
Audio Input and Output
The EX28 uses a balanced, female XLR connector for the audio input connector,
and a male XLR connector to provide through output signal. The through output
connector, wired in parallel to the audio input, will continue to provide the
input signal if the EX28 is turned off. The audio input circuit presents a 20
k balanced input impedance to a three-pin XLR connector with the following
connections:
EX28 Rear panel
Main input
Through output
Pin 1 – Ground Pin 2 – Signal (+) Pin 3 – Signal (-)
Case – Earth (AC) ground and chassis
Audio signal can be daisy-chained using the through output connector on the
input panel. A single source can drive multiple EX28 speakers with a
paralleled input loop. If you are driving multiple EX28’s make certain that
the source device can drive the total load impedance presented by the
paralleled input circuits.
The audio source must be capable of producing a minimum of 1.0V volts rms to
produce the maximum peak SPL over the operating bandwidth of the loudspeaker.
To avoid distortion from the source, make sure the source equipment provides
an adequate drive circuit design for the total paralleled load impedance
presented by the speakers. The input impedance for a single loudspeaker is 20
k. If “n” represents the number of EX28 loudspeakers in a system, paralleling
the inputs of n loudspeakers will produce a balanced input load of 20 k
divided by “n”.
If the loudspeaker produces noises such as hiss and popping, disconnect the
audio cable from the loudspeaker, if the noise stops, then most likely the
problem is not with the loudspeaker. Check the audio cable, source, and AC
power for the source of the problem.
Ensure that all cabling carrying signal to multiple amplifiers and active
speaker systems is wired correctly. Make sure that the polarity has not been
reversed. Reversed polarity can cause severe degradation in frequency response
and can also impact the dispersion characteristics of the speaker.
EX28 · Audio Signal
37
EX28 · Audio Signal
Power On / Signal LED
This LED turns green when the speaker is turned ON. The light will turn yellow
when signal is present.
Low Cut Switch
The EX28 features a 90Hz High Pass Filter. Pressing the button engages this
filter allowing the speaker to reproduce frequencies only above 90Hz.
Limiter
The EX28 employs a protection system based on rms limiting of the amplifiers.
This type of protection strategy allows the speaker to operate safely under
overload conditions. When the rms “limiter” engages, the output level of both
amplifiers is reduced to a safe operating level. This type of protection
allows the frequency response of the system to remain unchanged as the level
is lowered. By not compressing or limiting peak signal, dynamics also remain
unchanged. The control objective is to regulate the operating temperature of
the transducers magnetic circuits long term. This ensures no impact on
performance due to power compression and allows the components to retain their
ability to reproduce high dynamics. When overdriven the rms limiter will
disengage only if the input level is turned down.
Thermal Protection
In the unlikely event of over heating the speaker system will shut down. You
can expect for the system to be down for at least 2-3 minutes depending on the
ambient temperature and whether the system is being exposed to direct sun
light. The EX28 features a fin-less heatsink that allows it to operate in any
position. There is also an internal fan located inside the amplifier module.
The fan speed is dependent on two factors; the temperature of the heat sink
and the output level of the speaker. As temperature increases, so does fan
speed. As audio level increases, fan speed also increases as a preventative
measure designed to keep the heat sink temperature low. Under normal operating
conditions, the fan noise remains inaudible. Please contact KV2 Audio or a
local service representative should the system enter a thermal condition under
normal operating conditions.
38
EX28 · Audio Signal
EX28 · Specifications
EX28 · Specifications
Specifications
System Acoustic Perfomance Max SPL Long-term Max SPL Peak -3dB Response -10dB
Response Crossover Point
High Frequency Section Acoustic Design High Horn Coverage Horizontal /
Vertical Throat Exit Diameter / Diaphragm Size Diaphragm Material Magnet Type
High Frequency Amplifier Specification Type Rated Continuous Power Distortion
Operating Bandwidth
Low Frequency Section Acoustic Design Woofer Size / Voice Coil Diameter Magnet
Type Diaphragm Material
Low Frequency Amplifier Specification Type Rated Continuous Power Distortion
Operating Bandwidth
Signal Input Input Sensitivity Input Impedance
Power Power Connector Operating Voltage Range Recommended Amperage
Cabinet Cabinet Material Handles Pole Mount Color
Physical Dimensions Height Width Depth Weight
39
126dB 132dB 62Hz to 20kHz 52Hz to 28kHz 2kHz
Horn Loaded 100° x 80° 1″ / 1.75″ Titanium Neodymium
Class AB Push-Pull 50W <0.05% 2.0kHz to 28kHz
Front Loaded, Bass Reflex 8″ / 2″ (one feat. Trans coil) Neodymium Epoxy
Reinforced Cellulose
High efficiency, Current-enhancing switch mode 450W <0.05% 62Hz to 2.0kHz
0,775V RMS 20 k
Neutrik PowerCon® 100 to 120V @ 60Hz | 230 to 250V @ 50Hz 6A 115V / 3A 230V
Baltic birch 1 35 mm “Orange peeled” Matt Black or any RAL
668 mm (26.29″) 260 mm (10.23″) 320 mm (12.59″) 23 kg (50.7lbs)
EX28 · Frequency characteristics
Frequency response
EX28 · Frequency characteristics
Horizontal Polarplots
73Hz – 250Hz
500Hz – 2kHz
4kHz – 16kHz
73Hz 125Hz 250Hz
Vertical Polarplots
73Hz – 250Hz
500Hz 1kHz 2kHz
500Hz – 2kHz
4kHz 8kHz 16kHz
4kHz – 16kHz
73Hz 125Hz 250Hz
500Hz 1kHz 2kHz
4kHz 8kHz 16kHz
40
EX28 · Drawings
Drawings
41
EX28 · Drawings
EX12
· Overview
EX10 – part number KVV 987 095 (250V) KVV 987 059 (230V) KVV 987 060 (115V)
Application
Designed for the highest quality vocal and full range live performance in
medium size applications
· Suitable for medium to large conference, Theatre and small to medium scale
concerts
· Scalable from stand alone to full range large systems incorporating
· EX subwoofers · Fixed installations · Stage monitoring
EX12 · Overview
Introduction
The EX12 is a 2-way high output, active, compact, fullrange speaker system.
Design objectives for the EX12 were focused on the expansion of KV2 Audio’s
primary philosophy of speakers systems with increased dynamic range, very high
output and a consistent sound character no matter what the output level. The
EX12 sets new levels of performance for compact cabinets achieved through the
integration of new amplifier, transducer and electronic control technologies
that are closely tied to a passion for taking performance to the next level.
Electronics
Amplifier power, electronic crossovers, phase alignment, equalization, time
correction and speaker protection are integrated into the EX12’s amplifier
module. On-board electronics ensures fast, easy set up and complete control.
An improved version of KV2 Audio’s switch mode, current enhancing low
frequency amplifier has been developed for the EX12. The new configuration
improves overall system efficiency and increases output, allowing passive
radiation of heat to take place through a unique “fin-less” heat sink that can
be placed in any position or direction. This ensures cool operation in
horizontal or vertical applications. Additionally, the EX12 amplifier unit
contains an internally located electric fan that is operated by a temperature
sensing circuit which will slowly bring the fan online as required in extreme,
high temperature situations.
Months of research were invested into designing circuitry that ensures that
the extreme dynamic range exemplified by the speaker system is maintained even
under clipping conditions. The real test of the EX12 ‘s limits is when it is
exposed to the rigors and demands of live audio playback where consistent
clipping of amplifiers, generation of distortion artifacts, dramatic increases
in the floor and the elimination of dynamic range put the product to an
extreme test.
The EX12’s high frequency compression driver is powered and controlled by KV2
Audio’s standard low intermodulation distortion, Class A/B, push-pull
circuitry, high and mid frequency amplifier design. Metal Oxide Silicon Field
Effect Transistors (MOSFET) are used for the output stage and the compression
driver coupled through a transformer balanced speaker output. The entire
performance strategy for this type of design is based on producing the lowest
intermodulation distortion possible and the highest audio quality in the
critical mid and high operating bands.
42
EX12 · Overview
Acoustic Components
KV2 Audio has developed a revolutionary woofer technology called Trans-CoilTM.
The woofer has two coils, a standard voice coil assembly and a second coil
placed directly on the neodymium magnetic circuit’s pole piece. This
technology eliminates voice coil inductance resulting in a flat impedance
response above the resonance point and achieves faster transient response
through increased force and control of the moving mass. It also linearises
acoustic and electrical phase response, reduces harmonic distortion and
increases power transfer and transducer speed. Through this technology, the
speaker now behaves like both a woofer at lower frequencies and like a mid-
range at higher frequencies allowing a seamless transition to take place at
the crossover frequency. The EX12’s neodymium compression driver is loaded on
a constant directivity horn designed for smooth, wide dispersion performance.
More importantly, it has also been designed to precisely match the power
response of the woofer at the crossover frequency, a crucial design objective
that ensures smooth transition and minimizes anomalies. The compression driver
is a new,3.00-inch titanium diaphragm design, featuring a radial phase
plug,progressive parabolic semi-circle suspension,direct-drive nomex voice
coil assembly and the industry ‘s largest neodymium magnetic motor
structure.Each feature was developed over an extended period of time and
implemented as part of a strategy to lower distortion,increase output and
improve response characteristics. The EX12 horn was designed with one primary
performance goal. The horn design is based on constant- directivity geometry
with an emphasis on generating very low air distortion artifacts, maintaining
low transducer compression ratios, high output and wide dispersion (80 x 40).
The horn is an injected moulded aluminium part that functions as a heat
dissipitater for the compression driver’s neodymium magnetic motor structure.
Enclosure Design
The EX12 is a very compact, asymmetrical geometry enclosure design allowing it
to be used in a variety of applications and featuring a number of
ergonomically designed components that make it lightweight and easy to use. An
extensive set of professional hardware features enables the EX12 to be used in
a variety of environments using an array of industry standard hardware.These
facilitate both portable and fixed installations with a maximum amount of
mounting flexibility. A specially molded aluminum top handle was designed and
fitted to the top of the cabinet. It functions as the principle pick up handle
as well as providing several fixed installation and hanging solutions. It has
a centrally located M10 hang point as well as four additional M6 bracket
points. The handles four principal mounting bolts also provide an OmnimountTM
bracket point. There are two side-mounted M10 hang points that can be used
with brackets or eyebolts.
43
EX12 · Overview
EX12 · AC Power Requirements
AC Power
The EX12 uses a PowerCon 3-pole AC main system with locking connectors to
prevent accidental disconnection. The main AC connector (blue) serves as the
power input. The EX12 operates in either 115V, 230V or 250V modes. Although
pre-configured at the factory, the unit’s operating voltage mode can be
changed in the field.
Voltage Requirements
The EX12 operates safely and without audio discon – tinuity if the AC voltage
stays within the operating window of 100V-120V in 115V mode, 205V-240V in 230V
mode and 225V-260V when working in 250V mode, at 50 or 60Hz. If the On LED
does not illuminate or the system does not respond to audio input, remove AC
power immediately. Verify that the voltage is within the proper range. If the
problem persists, please contact KV2 Audio or an authorized service center. If
the voltage drops below the low boundary of its safe operating range, the
loudspeaker will shut down if the voltage does not rise above the low boundary
before storage circuits are depleted. How long the loudspeaker will continue
to function during brownout depends on the amount of voltage drop and the
audio source level during the drop. If the voltage increases above the upper
boundary ofthe range, the power supply can be damaged. It is recommended that
the voltage supply be within the rated voltage window. This ensures that AC
voltage variations from the service entry- or peak voltage drops due to cable
runs – do not cause the amplifier to cycle on and off or cause damage to the
power supply. For best performance, the AC cable voltage drop should not
exceed 10 volts, or 10 percent at 115 volts and 5 percent at 230 volts. Make
sure that even with the AC voltage drop, the AC voltage always stays within
recommended operating ranges. The minimum electrical service amperage required
by a EX12 speaker system is the sum of each loudspeaker’s maximum continuous
rms current. An additional 50 percent above the minimum amperage is
recommended to prevent peak volt-age drops at the service entry.
The Power Connector
The EX12 requires a grounded outlet. It is very important that the loudspeaker
AC supply be properly grounded in order to operate safely and properly. Use
the PowerCon AC cable-wiring diagram on page 36 to create international or
special-purpose power connectors:
Power connector assembly
44
EX12 · AC Power Requirements
EX12 · AC Power Requirements
Current Requirements
Each EX12 requires approximately 5 Amps max at 115V AC for proper operation.
This allows up to three EX12’s to be powered from one 15 A breaker at 115V and
up to 6 loudspeakers at 230V or 250V.
The EX12 presents a dynamic load to the AC mains, which causes the amount of
current to fluctuate depending on quiet or loud operating levels. Since
different cables and circuit breakers heat up at varying rates, it is
essential to understand the types of current ratings and how they correspond
to circuit breaker and cable specifications.
The maximum long-term continuous current is the maximum rms current during a
period of at least ten seconds. It is used to calculate the temperature rise
in cables, in order to select a cable size and gauge that conforms to
electrical code standards. It is also used to select the rating for slow-
reacting thermal breakers.
The burst current is the maximum rms current during a period of approximately
one second, used to select the rating of most magnetic breakers and to
calculate the peak voltage drop in long AC cables according to the formula: V
pk (drop)= I pk x R (cable total)
The ultimate short-term peak current is used to select the rating of fast
reacting magnetic breakers. Use the table below as a guide when selecting
cable gauge size and circuit breaker ratings for your operating voltage.
Current Draw Max Long Term Continuous Burst Current Short Term Peak
115V Mode 5 A rms 7.5 A rms 20 A peak
230V, 250V 2.5 A rms 5 A rms 10 A peak
AC Cable Color Coding
If the colors referred to in the diagram don’t correspond to the terminals in
your plug, use the following guidelines: Connect the blue wire to the terminal
marked with a N or colored black. Connect the brown wire to the terminal
marked with a L or colored red. Connect the green and yellow wire to the
terminal marked with a E or colored green or green and yellow.
EX12 · AC Power Requirements
Power cable color coding The EX12 requires a ground connection. Always use a
grounded outlet and plug.
45
EX12 · Audio Signal
The EX12 Control Panel
The EX12 features an easy to use rear control panel featuring audio input and
output, level control, LED status lights and a low pass filter that can be
engaged when the loudspeaker is used as a stage monitoring device.
EX12 · Audio Signal
EX12 Rear panel
Audio Input and Output
The EX12 uses a balanced, female XLR connector for the audio input connector,
and a male XLR connector to provide through output signal. The through output
connector, wired in parallel to the audio input, will continue to provide the
input signal if the EX12 is turned off. The audio input circuit presents a 20
kOhm balanced input impedance to a three-pin XLR connector with the following
connectors:
Main input
Through output
Pin 1 – Ground Pin 2 – Signal (+) Pin 3 – Signal (-)
Case – Earth (AC) ground and chassis
Audio signal can be daisy-chained using the through output connector on the
input panel. A single source can drive multiple EX12 speakers with a
paralleled input loop. If you are driving multiple EX12’s in an array, make
certain that the source device can drive the total load impedance presented by
the paralleled input circuit of the array.
The audio source must be capable of producing a minimum of 20 dB volts (10
volts rms into 600 ohms) to produce the maximum peak SPL over the operating
bandwidth of the loudspeaker. To avoid distortion from the source, make sure
the source equipment provides an adequate drive circuit design for the total
paralleled load impedance presented by the array. The input impedance for a
single loudspeaker is 20 kOhms. If “n” represents the number of EX12
loudspeakers in a system, paralleling the inputs of n loudspeakers will
produce a balanced input load of 20 kOhms divided by “n”.
Most source equipment is safe for driving loads no smaller than 10 times the
source’s output impedance. For example, cascading an array of 10 units
consisting of EX12 speakers produces an input impedance of 2000 ohms (20kOhms
divided by 10). The source equipment should have output impedance of 200 ohms
or less. This is also true when connecting EX12’s in parallel (loop out) with
other KV2 Audio amplifiers and active speakers and subwoofers.
If the loudspeaker produces noises such as hiss and popping, disconnect the
audio cable from the loudspeaker, if the noise stops, then most likely the
problem is not with the loudspeaker. Check the audio cable, source, and AC
power for the source of the problem.
Ensure that all cabling carrying signal to multiple amplifiers and active
speaker systems is wired correctly. Make sure that the polarity has not been
reversed. Reversed polarity can cause severe degradation in frequency response
and can also impact the dispersion characteristics of the speaker.
46
EX12 · Audio Signal
Amplifiers and Acoustic Filters
The EX12 is powered by two separate power amplifiers specifically designed and
optimised for the low frequency and high frequency drivers. The control system
in the EX12 processes the audio signal through a series of electronic filters
and circuits providing equalization, crossover filters, phase adjustment,
thermal and overdrive protection.
The EX12 employs a protection system based on rms limiting of the amplifiers.
This type of protection strategy allows the speaker to operate safely under
overload conditions. When the rms “limiter” engages, the output level of both
amplifiers is reduced to a safe operating level. This type of protection
allows the phase response of the system to remain unchanged as the level is
lowered. Buy not compressing or limiting peak signal, dynamics also remain
unchanged. The control objective is to regulate the operating temperature of
the transducers magnetic circuits log term. This ensures no impact on
performance due to power compression and allows the components to retain their
ability to reproduce high dynamics.
LED Status Lights
The EX12 control panel uses two distinct LED’s to provide operating status
information.
Power On / Limiter LED
This LED turns green when the speaker is turned ON. The light will continue to
be green during normal operation of the speaker system. Should the rms
limiting system be engaged due to overdriving of the EX12, the LED will change
color from green to yellow. The audible effect of the rms limiter is a
lowering of overall output level. The rms limiter will disengage only if the
input level is turned down.
Signal / Thermal LED
This LED turns green when there is audio signal present in the EX12. This
signal indicator can be used to troubleshoot wiring problems. The LED will
change from green to yellow under a thermal condition resulting from
overheating of the amplifier system. Under this condition, the speaker system
will shut down. You can expect for the system to be down for at least 2-3
minutes depending the ambient temperature and whether the system is being
exposed to direct sun light.
The EX12 features a finless heatsink that allows it to operate in any
position. There is also an internal fan located inside the amplifier module.
The fan speed is dependent on two factors; the temperature of the heat sink
and the output level of the speaker. As temperature increases, so does fan
speed. As audio level increases, fan speed also increases as a preventative
measure designed to keep the heat sink temperature low. Under normal operating
conditions, the fan noise remains inaudible. Please contact KV2 Audio or a
local service representative should the system enter a thermal condition under
normal operating conditions.
Stage Monitor Filter
The EX12 features a 90 Hz Monitor Filter control. Depressing the button
engages a low pass audio filter allowing the speaker to be effectively used to
reproduce frequencies above 90Hz. When using EX12 as a stage monitor, the horn
should be rotated 90º.
47
EX12 · Audio Signal
EX12 · Specifications
Specifications
System Acoustic Perfomance Max SPL Long-term Max SPL Peak -3dB Response -10dB
Response Crossover Point
High Frequency Section Acoustic Design High Horn Coverage Horizontal /
Vertical Rotatable Horn Throat Exit Diameter / Diaphragm Size Diaphragm
Material Magnet Type
High Frequency Amplifier Specification Type Rated Continuous Power Distortion
Operating Bandwidth
Low Frequency Section Acoustic Design Woofer Size / Voice Coil Diameter /
Design Magnet Type Diaphragm Material
Low Frequency Amplifier Specification Type Rated Continuous Power Distortion
Operating Bandwidth
Signal Input Input Sensitivity Input Impedance
Power Power Connector Operating Voltage Range Recommended Amperage
Cabinet Cabinet Material Handles Pole Mount Color
Physical Dimensions Height Width Depth Weight
127dB 133dB 55Hz to 22kHz 45Hz to 30kHz 1.1kHz
Horn Loaded 80° x 40° NO 1.4″ / 3″ Nitride Titanium Neodymium
Class AB Push-Pull 50W <0.05% 1.1kHz to 30kHz
Front Loaded, Bass Reflex 12″ / 3.0″ / Trans Coil Neodymium Epoxy Reinforced
Cellulose
High efficiency, Current-enhancing switch mode 450W <0.05% 45Hz to 1.1kHz
1.0V RMS 20 k
Neutrik PowerCon® 100 to 120V@60Hz | 205 to 240V@50Hz | 225 to 260V@50Hz 6A
115V | 3A 230V | 3A 250V
Baltic birch 2 35 mm “Orange peeled” Matt Black or any RAL
596 mm (23.46″) 368 mm (14.49″) 368 mm (14.49″) 29 kg (63.8lbs)
48
EX12 · Specifications
EX12 · Frequency characteristics
Frequency response
EX12 · Frequency characteristics
Horizontal Polarplots
73Hz – 250Hz
500Hz – 2kHz
4kHz – 16kHz
73Hz 125Hz 250Hz
Vertical Polarplots
73Hz – 250Hz
500Hz 1kHz 2kHz
500Hz – 2kHz
4kHz 8kHz 16kHz
4kHz – 16kHz
49
73Hz 125Hz 250Hz
500Hz 1kHz 2kHz
4kHz 8kHz 16kHz
EX12 · Drawings
Drawings
50
EX12 · Drawings
EX15 · Overview
EX15 – part number KVV 987 267 (230V) KVV 987 266 (115V)
Application
Primarily designed as a true full- range stand-alone device for multiple
applications, whilst presenting the highest quality, definition and dynamic
range
· Suitable for medium to large conference · Theatre and small to medium scale
concerts · Scalable, can be used if required with EX subwoofers · Portable or
fixed installations
EX15
· Overview
Introduction
The EX15 is a 3-way high output, active, fullrange speaker system. Design
objectives for the EX15 were to present our consistent focused expansion of
KV2 Audio’s primary philosophy of speakers systems, with increased dynamic
range, very high output and a recognisable sound character no matter what the
output level. The EX15 sets new levels of performance for compact full-range
cabinets, achieved through the integration of new amplifier, transducer and
electronic control technologies that are closely tied to a passion for taking
performance to the next level.
Electronics
Amplifier power, electronic crossovers, phase alignment, equalization, time
correction and speaker protection are integrated into the EX15’s amplifier
module. On-board electronics ensure fast, easy set up and complete control. An
improved version of KV2 Audio’s switch mode, current enhancing low frequency
amplifier has been developed for the EX15. The new configuration improves
overall system efficiency and increases output allowing passive radiation of
heat to take place through a unique “fin-less” heat sink that can be placed in
any position or direction. This ensures cool operation in horizontal or
vertical applications. Additionally, the EX15 amplifier unit contains an
internally located electric fan that is operated by a temperature sensing
circuit which will slowly bring the fan online as required in extreme, high
temperature situations.
Months of research were invested into designing circuitry that ensures that
the extreme dynamic range exemplified by the speaker system is maintained even
under clipping conditions. The real test of the EX15’s limits is when it is
exposed to the rigors and demands of live audio playback where consistent
clipping of amplifiers, generation of distortion artifacts, dramatic increases
in the floor and the elimination of dynamic range put the product to an
extreme test.
The EX15’s high frequency compression driver is powered and controlled by KV2
Audio’s standard low intermodulation distortion, Class A/B, push-pull
circuitry, high and mid frequency amplifier design. Metal Oxide Silicon Field
Effect Transistors (MOSFET) are used for the output stage and the compression
driver coupled through a transformer balanced speaker output. The entire
performance strategy for this type of design is based on producing the lowest
intermodulation distortion possible and the highest audio quality in the
critical mid and high operating bands.
51
EX15 · Overview
Acoustic Components
The new EX15 incorporates a unique coaxial 15″ transducer with a 1.75″ Nitride
Titanium Neodymium Compression. Driver on a wide dispersion 80 x 60 degree
horn. Whilst most coaxial speakers will try to cover the full frequency
response, the EX15’s coaxial driver only covers bass and highs leaving the all
important mid-range to a 6″ neodymium speaker mounted on a large 80 x 60
degree horn. This resolves the issue of the 15″ driver trying and failing to
reproduce mid-range, a common problem with conventional coaxial designs. The
EX15’s unique design provides extremely flat, full range reproduction from a
compact yet powerful package that out performs speakers twice its size, weight
and price.
Enclosure Design
The EX15 is a logistical compact, asymmetrical geometry enclosure design,
allowing it to be used in a variety of applications and featuring a number of
ergonomically designed components that make it easy to move and use. An
extensive set of professional hardware features enables the EX15 to be used in
a variety of environments using an array of industry standard hardware.These
facilitate both portable and fixed installations with a maximum amount of
mounting flexibility.
52
EX15 · Overview
EX15 · AC Power Requirements
AC Power
The EX15 uses a PowerCon 3-pole AC main system with locking connectors to
prevent accidental disconnection. The main AC connector (blue) serves as the
power input. The EX15 operates in either 115V, 230V or 250V modes. Although
pre-configured at the factory, the unit’s operating voltage mode can be
changed in the field.
Voltage Requirements
The EX15 operates safely and without audio discon – tinuity if the AC voltage
stays within the operating window of 100V-120V in 115V mode, 205V-240V in 230V
mode and 225V-260V when working in 250V mode, at 50 or 60Hz. If the On LED
does not illuminate or the system does not respond to audio input, remove AC
power immediately. Verify that the voltage is within the proper range. If the
problem persists, please contact KV2 Audio or an authorized service center. If
the voltage drops below the low boundary of its safe operating range, the
loudspeaker will shut down if the voltage does not rise above the low boundary
before storage circuits are depleted. How long the loudspeaker will continue
to function during brownout depends on the amount of voltage drop and the
audio source level during the drop. If the voltage increases above the upper
boundary of the range, the power supply can be damaged. It is recommended that
the voltage supply be within the rated voltage window. This ensures that AC
voltage variations from the service entry- or peak voltage drops due to cable
runs do not cause the amplifier to cycle on and off or cause damage to the
power supply. For best performance, the AC cable voltage drop should not
exceed 10 volts, or 10 percent at 115 volts and 5 percent at 230 volts. Make
sure that even with the AC voltage drop, the AC voltage always stays within
recommended operating ranges. The minimum electrical service amperage required
by a EX15 speaker system is the sum of each loudspeaker’s maximum continuous
rms current. An additional 50 percent above the minimum amperage is
recommended to prevent peak volt-age drops at the service entry.
The Power Connector
The EX15 requires a grounded outlet. It is very important that the loudspeaker
AC supply be properly grounded in order to operate safely and properly. Use
the PowerCon AC cable-wiring diagram to create international or special-
purpose power connectors:
Power connector assembly
53
EX15 · AC Power Requirements
EX15 · AC Power Requirements
Current Requirements
Each EX15 requires approximately 5 Amps max at 115V AC for proper operation.
This allows up to three EX15’s to be powered from one 15 A breaker at 115V and
up to 6 loudspeakers at 230V or 250V.
The EX10 presents a dynamic load to the AC mains, which causes the amount of
current to fluctuate depending on quiet or loud operating levels. Since
different cables and circuit breakers heat up at varying rates, it is
essential to understand the types of current ratings and how they correspond
to circuit breaker and cable specifications.
The maximum long-term continuous current is the maximum rms current during a
period of at least ten seconds. It is used to calculate the temperature rise
in cables, in order to select a cable size and gauge that conforms to
electrical code standards. It is also used to select the rating for slow-
reacting thermal breakers.
The burst current is the maximum rms current during a period of approximately
one second, used to select the rating of most magnetic breakers and to
calculate the peak voltage drop in long AC cables according to the formula: V
pk (drop)= I pk x R (cable total)
The ultimate short-term peak current is used to select the rating of fast
reacting magnetic breakers. Use the table below as a guide when selecting
cable gauge size and circuit breaker ratings for your operating voltage.
Current Draw Max Long Term Continuous Burst Current Short Term Peak
115V Mode 5 A rms 7.5 A rms 20 A peak
230V, 250V 2.5 A rms 5 A rms 10 A peak
AC Cable Color Coding
If the colors referred to in the diagram don’t correspond to the terminals in
your plug, use the following guidelines: Connect the blue wire to the terminal
marked with a N or colored black. Connect the brown wire to the terminal
marked with a L or colored red. Connect the green and yellow wire to the
terminal marked with a E or colored green or green and yellow.
EX15 · AC Power Requirements
Power cable color coding The EX15 requires a ground connection. Always use a
grounded outlet and plug.
54
EX15 · Audio Signal
The EX15 Control Panel
The EX15 features an easy to use rear control panel with audio input and
output, level control, high and low frequency gain controls and LED status
lights.
EX15 · Audio Signal
EX15 Rear panel
Audio Input and Output
The EX15 uses a balanced, female XLR connector for the audio input connector,
and a male XLR connector to provide through output signal. The through output
connector, wired in parallel to the audio input, will continue to provide the
input signal if the EX15 is turned off. The audio input circuit presents a 20
kOhm balanced input impedance to a three-pin XLR connector with the following
connectors:
Main input
Through output
Pin 1 – Ground Pin 2 – Signal (+) Pin 3 – Signal (-)
Case – Earth (AC) ground and chassis
Audio signal can be daisy-chained using the through output connector on the
input panel. A single source can drive multiple EX15 speakers with a
paralleled input loop. If you are driving multiple EX15’s in an array, make
certain that the source device can drive the total load impedance presented by
the paralleled input circuit of the array. The audio source must be capable of
producing a minimum of 20 dB volts (10 volts rms into 600 ohms) to produce the
maximum peak SPL over the operating bandwidth of the loudspeaker. To avoid
distortion from the source, make sure the source equipment provides an
adequate drive circuit design for the total paralleled load impedance
presented by the array. The input impedance for a single loudspeaker is 20
kOhms. If “n” represents the number of EX15 loudspeakers in a system,
paralleling the inputs of n loudspeakers will produce a balanced input load of
20 kOhms divided by “n”.
Most source equipment is safe for driving loads no smaller than 10 times the
source’s output impedance. For example, cascading an array of 10 units
consisting of EX15 speakers produces an input impedance of 2000 ohms (20kOhms
divided by 10). The source equipment should have an output impedance of 200
Ohms or less. This is also true when connecting EX15’s in parallel (loop out)
with other KV2 Audio amplifiers and active speakers and subwoofers.
If the loudspeaker produces noises such as hiss and popping, disconnect the
audio cable from the loudspeaker, if the noise stops, then most likely the
problem is not with the loudspeaker. Check the audio cable, source, and AC
power for the source of the problem.
Ensure that all cabling carrying signal to multiple amplifiers and active
speaker systems is wired correctly. Make sure that the polarity has not been
reversed. Reversed polarity can cause severe degradation in frequency response
and can also impact the dispersion characteristics of the speaker.
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EX15 · Audio Signal
Amplifiers and Acoustic Filters
The EX15 is powered by two separate power amplifiers specifically designed and
optimized for the low frequency and high frequency drivers. The control system
in the EX15 processes the audio signal through a series of electronic filters
and circuits providing equalization, crossover filters, phase adjustment,
thermal and overdrive protection. The EX15 employs a protection system based
on rms limiting of the amplifiers. This type of protection strategy allows the
speaker to operate safely under overload conditions. When the rms “limiter”
engages, the output level of both amplifiers is reduced to a safe operating
level. This type of protection allows the phase response of the system to
remain unchanged as the level is lowered. By not compressing or limiting peak
signal, dynamics also remain unchanged. The control objective is to regulate
the operating temperature of the transducers magnetic circuits log term. This
ensures no impact on performance due to power compression and allows the
components to retain their ability to reproduce high dynamics.
LED Status Lights
The EX10 control panel uses two distinct LED’s to provide operating status
information.
Power On / Limiter LED
This LED turns green when the speaker is turned ON. The light will continue to
be green during normal operation of the speaker system. Should the rms
limiting system be engaged due to overdriving of the EX15, the LED will change
color from green to yellow. The audible effect of the rms limiter is a
lowering of overall output level. The rms limiter will disengage only if the
input level is turned down..
Signal / Thermal LED
This LED turns green when there is audio signal present in the EX15. This
signal indicator can be used to troubleshoot wiring problems. The LED will
change from green to yellow under a thermal condition resulting from
overheating of the amplifier system. Under this condition, the speaker system
will shut down. You can expect for the system to be down for at least 2-3
minutes depending the ambient temperature and whether the system is being
exposed to direct sun light. The EX15 features a finless heatsink that allows
it to operate in any position. There is also an internal fan located inside
the amplifier module. The fan speed is dependent on two factors; the
temperature of the heat sink and the output level of the speaker. As
temperature increases, so does fan speed. As audio level increases, fan speed
also increases as a preventative measure designed to keep the heat sink
temperature low. Under normal operating conditions, the fan noise remains
inaudible. Please contact KV2 Audio or a local service representative should
the system enter a thermal condition under normal operating conditions.
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EX15 · Audio Signal
EX15 · Specifications
EX15 · Specifications
Specifications
System Acoustic Perfomance Max SPL Long-term Max SPL Peak -3dB Response -10dB
Response Crossover Point
High Frequency Section Acoustic Design High Horn Coverage Horizontal /
Vertical Throat Exit Diameter / Diaphragm Size Diaphragm Material Magnet Type
Protection
High Frequency Amplifier Specification Type Rated Continuous Power Distortion
Operating Bandwidth
Mid Range Section Acoustic Design High Horn Coverage Horizontal / Vertical
Woofer Size / Voice Coil Diameter / Design Diaphragm Material Magnet Type
Protection
Low Frequency Section Acoustic Design Woofer Size / Voice Coil Diameter
Diaphragm Material Magnet Type Protection
Low Frequency Amplifier Specification Type Rated Continuous Power Distortion
Operating Bandwidth
Signal Input Input Sensitivity Input Impedance
Cabinet Cabinet Material Handles Pole Mount Color
Physical Dimensions Height Width Depth Weight
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129dB 135dB 44Hz to 18kHz 38Hz to 22kHz 500Hz, 2.7kHz
Horn Loaded 80° x 60° 1″ / 1.75″ Nitride Titanium Neodymium RMS Limiter
Class AB Push-Pull 50W <0.05% 2.7kHz to 22kHz
Horn Loaded 80° x 60° 6″ / 1.5″ Epoxy Reinforced Cellulose Neodymium RMS
Limiter
Front Loaded, Bass Reflex 15″ / 4″ Epoxy Reinforced Cellulose Neodymium RMS
Limiter
High efficiency, Current-enhancing switch mode 850W <0.05% 38Hz to 500kHz
1.0V RMS 20 k
Baltic birch 3 35 mm “Orange peeled” Matt Black or any RAL
700 mm (27.55″) 450 mm (17.71″) 450 mm (17.71″) 43 kg (94,8lbs)
EX15 · Frequency characteristics
Frequency response
EX15 · Frequency characteristics
Horizontal Polarplots
73Hz – 250Hz
500Hz – 2kHz
4kHz – 16kHz
73Hz 125Hz 250Hz
Vertical Polarplots
73Hz – 250Hz
500Hz 1kHz 2kHz
500Hz – 2kHz
4kHz 8kHz 16kHz
4kHz – 16kHz
73Hz 125Hz 250Hz
500Hz 1kHz 2kHz
4kHz 8kHz 16kHz
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EX15 · Drawings
Drawings
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EX15 · Drawings
EX Series Speakers · Accessories
PADDED HEAVY DUTY COVERS
Cover for EX6
part name: Cover EX6 part number: KVV 987 159 description: – heavy duty –
padded
Cover for EX26
part name: Cover EX26 part number: KVV 987 209 description: – heavy duty –
padded
Cover for EX10
part name: Cover EX10 part number: KVV 987 068 description: – heavy duty –
padded
Cover for EX12
part name: Cover EX12 part number: KVV 987 067 description: – heavy duty –
padded
EX Series Speakers · Accessories
Weatherproof cover for EX12
part name: Rainproof cover for EX12 part number: KVV 987 190 description: –
sound-permeable
Weatherproof cover for EX15
part name: Rainproof cover for EX15 part number: KVV 987 518 description: –
for EX15 – sound-permeable
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EX
Series Speakers · Accessories
HORIZONTAL BRACKET
Horizontal Bracket for EX6
part name: EX6 Horizontal Bracket part number: KVV 987 495 description: –
black – including two connection
bolts and bracket
VERTICAL BRACKET
Vertical Bracket for EX6
part name: EX6 Vertical Bracket part number: KVV 987 484 description: – for
EX6, ESD6 – black – including two
connection bolts
Horizontal Bracket for EX26
part name: EX26 Horizontal Bracket part number: KVV 987 493 description: –
black – including two
connection bolts and bracket
Vertical Bracket for EX26
part name: EX26 Vertical Bracket part number: KVV 987 492 description: – black
– including two
connection bolts
Horizontal Bracket for EX10
part name: EX10 Horizontal Bracket part number: KVV 987 486 description: – for
EX10, ESD10 – black – including two
connection bolts and bracket
Horizontal Bracket for EX28
part name: EX28 Horizontal Bracket part number: KVV 987 533 description: – for
EX28 – black – including
two connection bolts
Vertical Bracket for EX10
part name: EX10 Vertical Bracket part number: KVV 987 485 description: – for
EX10, ESD10 – black – including two
connection bolts
Vertical Bracket for EX28
part name: EX28 Vertical Bracket part number: KVV 987 532 description: – for
EX28 – black – including two
connection bolts
EX Series Speakers · Accessories
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EX Series Speakers · Accessories
Horizontal bracket for EX12
part name: EX12 Horizontal Bracket part number: KVV 987 058 description: – for
EX12 – black – including two
connection bolts and bracket
Vertical bracket for EX12
part name: EX12 Vertical Bracket part number: KVV 987 488 description: – for
EX12, ESD12 – black – including two
connection bolts
EX12 Vertical Bracket Double
part name: EX12 Vertical Bracket Double part number: KVV 987 152 description:
– for 2x EX12 – bolts included – black
Horizontal bracket for EX15
part name: EX15 Horizontal Bracket part number: KVV 987 035 description: –
black – including top hat cover
adaptor plate and two connection bolts and bracket
Bracket Top Hat Adapter
part name: Top Hat Adapter part number: KVV 987 090 description: – for
vertical and horizontal
brackets – including bolts – black
Vertical bracket for EX15
part name: EX15 Vertical Bracket part number: KVV 987 032 description: – black
– including two
connection bolts
Pole mount adaptor for EX6
part name: Pole mount adaptor part number: KVV 987 151 description: – black –
including locking bolt
EX Series Speakers · Accessories
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EX Series Speakers · Accessories
Grill fine options for EX6, EX26, EX10 and EX12
Grill – fine for EX6
part name: EX6 Grill – fine part number: KVV 987 350 description: – elegant
design – suitable for installations
Grill – fine for EX26
part name: EX26 Grill – fine part number: KVV 987 351 description: – elegant
design – suitable for installations
Grill – fine for EX10
part name: EX10 Grill – fine part number: KVV 987 330 description: – elegant
design – suitable for installations
Grill – fine for EX12
part name: EX12 Grill – fine part number: KVV 987 329 description: – elegant
design – suitable for installations
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EX Series Speakers · Accessories
EX Series Speakers · Accessories
Speaker pole – universal
part name: KV2-H part number: KVV 987 130
description: – Heavy duty telescopic
speakerpole – 0,735 to 1,23 m – diameter 35 mm – weight 2,2 kg – max. load 50
kg – bottom terminal M20 – matte black
min – max 735 mm – 1230 mm 28,937″ – 48.425″
Rotating the EX10 / EX12 Horn
The EX10 / EX12 horn can be rotated ninety degrees in order to accommodate
applications where the speaker will be used or installed horizontally.
This can be accomplished by removing the front grill.
Removing the horn, rotating and replacing the horn.
Replacing the front grille.
EX Series Speakers · Accessories · Rotating the EX10 / EX12 Horn
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EX Series Speakers · Warranty · Service
Warranty
Your EX Series Speakers is covered against defects in material and
workmanship. Refer to your supplier for more details.
Service
In the unlikely event that your EX Series Speakers develops a problem, it must
be returned to an authorised distributor, service centre or shipped directly
to our factory. Because of the complexity of the design and the risk of
electrical shock, all repairs must be attempted only by qualified technical
personnel. If the unit needs to be shipped back to the factory, it must be
sent in its original carton. If improperly packed, the unit may be damaged. To
obtain service, contact your nearest KV2 Audio Service Centre, Distributor or
Dealer.
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EX Series Speakers · Warranty · Service
The Future of Sound. Made Perfectly Clear.
KV2 Audio International Nádrazní 936, 399 01 Milevsko Czech Republic Tel.:
+420 383 809 320 Email: info@kv2audio.com
www.kv2audio.com
KVV120118-00-03-0
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