JBL PROFESSIONAL 305P MkII Powered Studio Monitor Owner’s Manual
- September 17, 2024
- JBL Professional
Table of Contents
- 305P MkII Powered Studio Monitor
- Specifications
- Product Usage Instructions
- Section 1: Important Safety Instructions
- Section 6: System Connections
- Section 7: Troubleshooting
- Q: How do I register my JBL 3 Series speakers?
- Q: What should I do if my studio monitors do not power on?
- Q: Can I use the studio subwoofer with other speaker
305P MkII Powered Studio Monitor
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Specifications
- Model: JBL 3 Series Studio Monitors
- 305P MkII: 5″ Powered Studio Monitor
- 306P MkII: 6″ Powered Studio Monitor
- 308P MkII: 8″ Powered Studio Monitor
- LSR310S: 10″ Powered Studio Subwoofer
Product Usage Instructions
Section 1: Important Safety Instructions
-
READ these instructions.
-
KEEP these instructions.
-
HEED all warnings.
-
FOLLOW all instructions.
-
DO NOT use this apparatus near water.
-
CLEAN ONLY with a dry cloth.
-
DO NOT block any ventilation openings. Install in accordance
with the manufacturer’s instructions. -
DO NOT install near any heat sources such as radiators, heat
registers, stoves, or other apparatus that produce heat. -
DO NOT defeat the safety purpose of the polarized or grounding
type plug. -
PROTECT the power cord from being walked on or pinched.
-
ONLY USE attachments/accessories specified by the
manufacturer.
Section 6: System Connections
For Two Channel Systems:
-
Connect the studio monitors to your audio interface using
balanced cables. -
Ensure proper polarity and phase alignment for optimal sound
quality.
For Surround Sound Systems:
-
Connect the studio monitors and subwoofer to your surround
sound receiver using appropriate cables. -
Configure the system to ensure proper channel distribution and
balance.
Section 7: Troubleshooting
If you encounter any issues with your JBL 3 Series Studio
Monitors, refer to the troubleshooting section of the manual for
solutions. Contact JBL service if problems persist.
Frequently Asked Questions (FAQ)
Q: How do I register my JBL 3 Series speakers?
A: To register your speakers, visit www.jblpro.com/registration
and follow the provided instructions for product registration.
Q: What should I do if my studio monitors do not power on?
A: Check the power cord connection and ensure it is securely
plugged into a functioning power outlet. If the issue persists,
contact JBL service for assistance.
Q: Can I use the studio subwoofer with other speaker
systems?
A: The LSR310S subwoofer is designed to complement the JBL 3
Series Studio Monitors but can be used with other speaker systems
that have compatible input connections.
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Owners Manual
305P MkII
5″ Powered Studio Monitor
306P MkII
6″ Powered Studio Monitor
308P MkII
8″ Powered Studio Monitor
LSR310S
10″ Powered Studio Subwoofer
Product Registration Thank you for your purchase of JBL 3 Series Studio
Monitors
To receive important information as it becomes available, please take a moment
to register your 3 Series speakers at www.jblpro.com/registration.
2
Table of Contents
Section 1: Important Safety Instructions …………………………………………………………………………………………………
4
Section 2: Introduction …………………………………………………………………………………………………………………………. 5 JBL
Linear Spatial Reference (LSR) Design ……………………………………………………………………………………… 5
Image Control Waveguide ……………………………………………………………………………………………………………… 5 305P,
306P, and 308P MkII Features ……………………………………………………………………………………………….. 5 LSR310S
Powered Studio Subwoofer Features………………………………………………………………………………… 6 JBL
Professional Reliability ……………………………………………………………………………………………………………. 6
Section 3: Setting Up Your System ………………………………………………………………………………………………………… 7
Each 3 Series Carton Includes the Following Items:
………………………………………………………………………….. 7
Unpacking……………………………………………………………………………………………………………………………………. 7
Placement……………………………………………………………………………………………………………………………………. 7 Audio
Connections ……………………………………………………………………………………………………………………….. 9 LSR310S Powered
Studio Subwoofer Connections ………………………………………………………………………….. 9 Power
Connections ………………………………………………………………………………………………………………………. 9 Making
Sound………………………………………………………………………………………………………………………………. 9
Section 4: 305P, 306P, and 308P MkII Powered Studio Monitors
…………………………………………………………….. 10 Features
…………………………………………………………………………………………………………………………………….. 10 Input
Panel…………………………………………………………………………………………………………………………………. 11 Audio Connections
……………………………………………………………………………………………………………………… 11
Section 5: LSR310S Powered Studio Subwoofer…………………………………………………………………………………… 12
Features …………………………………………………………………………………………………………………………………….. 12 Input
Panel…………………………………………………………………………………………………………………………………. 13 Audio Connections
……………………………………………………………………………………………………………………… 14 Setting the Subwoofer Level
………………………………………………………………………………………………………… 14 Placement and Polarity Setting
…………………………………………………………………………………………………….. 14 Crossover Settings and Bass
Management …………………………………………………………………………………… 15 Surround Sound Systems and LFE
……………………………………………………………………………………………….. 15
Section 6: System Connections …………………………………………………………………………………………………………… 16 Two
Channel Systems …………………………………………………………………………………………………………………. 16 Surround Sound
Systems…………………………………………………………………………………………………………….. 17
Section 7: Troubleshooting………………………………………………………………………………………………………………….. 18
Section 8: Specifications …………………………………………………………………………………………………………………….. 19
Section 9: JBL Service Contact Information…………………………………………………………………………………………..
20
Section 10: Product Warranty Information …………………………………………………………………………………………….
21
3
Section 1: Important Safety Instructions
1. READ these instructions.
2. KEEP these instructions.
3. HEED all warnings.
4. FOLLOW all instructions.
5. DO NOT use this apparatus near water.
6. CLEAN ONLY with dry cloth.
7. DO NOT block any ventilation openings. Install in accordance with the
manufacturer’s instructions.
8. DO NOT install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat.
9. DO NOT defeat the safety purpose of the polarized or grounding type plug.
A polarized plug has two blades with one wider than the other. A grounding
type plug has two blades and a third grounding prong. The wider blade or the
third prong are provided for your safety. If the provided plug does not fit
into your outlet, consult an electrician for replacement of the obsolete
outlet.
10. PROTECT the power cord from being walked on or pinched, particularly at
plugs, convenience receptacles, and the point where they exit from the
apparatus.
11. ONLY USE attachments/accessories specified by the manufacturer.
USE ONLY with a cart, stand, tripod, bracket, or table specified by the
manufacturer, or sold with the apparatus. When a cart is used, use caution
when moving the cart/apparatus combination to avoid injury from tip-over.
13. UNPLUG this apparatus during lightning storms or when unused for long
periods of time.
14. REFER all servicing to qualified service personnel. Servicing is required
when the apparatus has been damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to rain or moisture, does not
operate normally, or has been dropped.
15. DO NOT expose this apparatus to dripping or splashing and ensure that no
objects filled with liquids, such as vases, are placed on the apparatus.
16. To completely disconnect this apparatus from the AC Mains, disconnect the
power supply cord plug from the AC receptacle.
17. Where the mains plug or an appliance coupler is used as the disconnect
device, the disconnect device shall remain readily operable.
18. DO NOT overload wall outlets or extension cords beyond their rated
capacity as this can cause electric shock or fire.
The exclamation point, within an equilateral triangle, is intended to alert
the user to the presence of important operating and maintenance (servicing)
instructions in the literature accompanying the product.
The lightning flash with arrowhead symbol within an equilateral triangle is
intended to alert the user to the presence of uninsulated “dangerous voltage”
within the product’s enclosure that may be of sufficient magnitude to
constitute a risk of electrical shock to persons.
ESD Warning: The icon to the left indicates text regarding potential danger
associated with the discharge of static electricity from an outside source
(such as human hands) into an integrated circuit, often resulting in damage to
the circuit.
WARNING: To reduce the risk of fire or electrical shock, do not expose this
apparatus to rain or moisture.
WARNING: No naked flame sources such as lighted candles should be placed
on the product.
WARNING: Equipment shall be connected to a MAINS socket outlet with a
protective earthing connection.
CAUTION: To reduce the risk of electric shock, grounding of the center pin of
this plug must be maintained.
WARNING: This product is intended to be operated ONLY from the voltages listed
on the back panel or the recommended, or included, power supply of the
product. Operation from other voltages other than those indicated may cause
irreversible damage to the product and void the products warranty. The use of
AC Plug Adapters is cautioned because it can allow the product to be plugged
into voltages in which the product was not designed to operate. If you are
unsure of the correct operational voltage, please contact your local
distributor and/or retailer. If the product is equipped with a detachable
power cord, use only the type provided, or specified, by the manufacturer or
your local distributor.
4
WARNING: Do Not Open! Risk of Electrical Shock. Voltages in this equipment are
hazardous to life. No user-serviceable parts inside. Refer all servicing to
qualified service personnel.
Place the equipment near a main power supply outlet and make sure that you can
easily access the power breaker switch.
FCC AND CANADA EMC COMPLIANCE INFORMATION:
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause
undesired operation.
NOTE: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more
of the following measures:
· Reorient or relocate the receiving antenna. · Increase the separation
between the equipment and receiver. · Connect the equipment into an outlet on
a circuit different from
that to which the receiver is connected. · Consult the dealer or an
experienced radio/TV technician for
help. Approved under the verification provision of FCC Part 15 as a Class B
Digital Device.
Caution: Changes or modifications not expressly approved by the manufacturer
could void the user’s authority to operate this device.
CAN ICES-3 (B)/NMB-3(B)
EU COMPLIANCE INFORMATION:
Hereby, Harman Professional declares that the equipment type JBL 305P MKII,
306P MKII, 308P MKII, are in compliance with the following:
· European Union Low Voltage Directive 2014/35/EU · European Union EMC
Directive 2014/30/EU · European Union Restriction of Hazardous Substances
Recast
(RoHS2) Directive 2011/65/EU · European Union Registration, Evaluation,
Authorization and
Restriction of Chemicals (REACH) Directive 1907/2006 The full text of the EU
declaration of conformity is available at the following Internet address:
http://www.jblpro.com/www/productsupport/downloads
WEEE NOTICE: This appliance is labeled in accordance with European Directive
2012/19/EU concerning waste of electrical and electronic equipment (WEEE).
This label indicates that this product should not be disposed of with
household waste. It should be deposited at an appropriate facility to enable
recovery and recycling.
Section 2: Introduction
Congratulations on your purchase of JBL Professional 3 Series Studio Monitors.
The 3 Series meet JBL’s high standards for accuracy and long-term reliability
in demanding professional applications. All 3 Series models incorporate JBL
Professional transducer and network technologies to provide accurate frequency
response, exceptional low frequency extension and high SPL capability. JBL
Linear Spatial Reference (LSR) design ensures greater accuracy at the mix
position in acoustically varied workspaces and production environments.
Additionally, each speaker is equipped to interface with a range of signal
sources, including high-output professional audio equipment.
JBL LINEAR SPATIAL REFERENCE (LSR) DESIGN
Because listening environments vary, JBL designed the 3 Series system using
Linear Spatial Reference design criteria that improve accuracy at the
listening position in a broad range of rooms. The key to accuracy is ensuring
that not only the on-axis sound is neutral, but also the reflected sound
reaching the mix position is neutral.
While most manufacturers take only a single on-axis measurement of the
speaker’s performance, Linear Spatial Reference design criteria requires 72
measurements, taken 360 degrees around the speaker, yielding 1,200 times more
data. This data is used in the design of critical system components, enabling
JBL to engineer complete systems that deliver smooth off-axis response. The
result: clear, accurate sound at the listening position in any room.
IMAGE CONTROL WAVEGUIDE
JBL’s revolutionary Image Control Waveguide gives the 3 Series Powered Studio
Monitors remarkable imaging, a wide soundstage, and a solid “phantom center”.
Subtle details can be heard, even in a dense mix. As an added benefit, the
Image Control Waveguide provides a broad “sweet spot”, so you don’t have to be
seated directly in front of the speakers to hear accurate and natural and open
sound.
305P, 306P, AND 308P MKII FEATURES
3 Series MkII models include a range of features to meet the needs of
demanding audio production applications:
· The magnetically-shielded low frequency transducers in MkII models, equipped
with 1.5″ voice coils and robust motor structures fine tuned for increased
linearity, deliver excellent low frequency performance. By reducing thermal-
related effects, the 3 Series MkII Studio Monitors and LSR310S Subwoofer sound
the same at low, medium, and high levels. The woofers are magnetically
shielded to prevent interference with magnetically sensitive displays and
equipment. The woofer’s self-repairing dust dome is resistant to dents caused
by fingers or external objects.
· JBL’s patented Slip StreamTM low frequency port design works in concert with
the woofer to produce deep bass response at any playback level. The double-
flared shape of the port is precisely engineered for greater low frequency
extension and reduced turbulence.
· The bi-amplified design, with individual power amplifiers for the low
frequency and high frequency transducers, uses efficient high-output Class-D
integrated power amplifiers to provide high SPL (sound pressure level).
· Magnetically-shielded soft dome high frequency transducers with optimally
damped materials improve transient response and minimize distortion. By
reducing distortion in the lower operating range, where the ear is most
sensitive, these transducers reduce ear fatigue.
· Balanced XLR and ¼” input connectors.
· +4dBu / -10dBV INPUT SENSITIVITY switch allows connection to consumer-grade
or high-output professional equipment without danger of input overload.
· Detented VOLUME attenuator allows fine adjustment of levels for a broad
range of signal sources.
· HIGH FREQUENCY TRIM control to adjust the high frequency response to taste
or compensate for acoustically reflective or absorptive listening
environments.
· BOUNDARY EQ switch compensates for low-frequency acoustic anomalies that can
occur when loudspeakers are in close proximity to walls.
5
LSR310S POWERED STUDIO SUBWOOFER FEATURES
Producing extended low frequency response into the 20Hz region, the LSR310S is
the perfect match for the 3 Series MkII studio monitors. The LSR310S feature
set includes: · A Magnetically-shielded low frequency transducer, equipped
with a 1.5″ voice coil and robust motor
structure for excellent low frequency performance. By reducing thermal-related
effects, the 3 Series MkII Studio Monitors and LSR310S Subwoofer sound the
same at low, medium, and high levels. The woofer is magnetically shielded to
prevent interference with magnetically sensitive displays and equipment. The
woofer’s self-repairing dust dome is resistant to dents caused by fingers or
external objects. · A custom-designed down-firing, high-excursion 10″ woofer
with additional bucking magnet. · A 200 watt Class-D power amplifier with
abundant output and dynamic headroom for the most demanding production styles.
· The patented Slip Stream low frequency port, designed to work in concert
with the 3 Series MkII woofers for accurate bass response at all playback
levels. · A detented VOLUME control, making it easy to balance the LSR310S
with the studio monitor system. · Balanced XLR and ¼” input connectors. · Two
XLR output connectors to add the LSR310S to any studio monitor system and
extend its low frequency response. · A +4dBu / -10dBV INPUT SENSITIVITY switch
for connection to consumer or high-output professional equipment without
danger of input overload. · Three CROSSOVER settings: · 80Hz This setting
implements high- and low-pass filters to create a seamless blend of the
LSR310S with the 3 Series MkII studio monitors or other speaker system. · XLF
This special setting activates a 120Hz high-pass filter in conjunction with
a low frequency
tuning that approximates the tuning used in club playback systems. Using this
setting, the bass output more than doubles. · External The external setting
bypasses all filtering, allowing use of an external active crossover. · A
protective limiting circuit allows the subwoofer to operate continuously at
full output without failure.
JBL PROFESSIONAL RELIABILITY
Prior to becoming a production-ready design, each 3 Series model is subjected
to JBL’s tough 100-hour power test, in which the speaker is required to play
continually at full output for 100 hours without failure. This demanding test
ensures the 3 Series speakers will deliver years of reliable performance. To
get the most out of the JBL 3 Series, please review this owner’s manual and
keep it on hand for future reference. Also, please register your new speakers
at www.jblpro.com/registration.
6
Section 3: Setting Up Your System
EACH 3 SERIES CARTON INCLUDES THE FOLLOWING ITEMS:
· One 3 Series MkII studio monitor or 3 Series subwoofer
· One power cord
· Quick setup guide
· Four peel-off rubber pads (305P, 306P, and 308P MkII models only)
UNPACKING
When removing a speaker from its packaging, we recommend the following
procedure, which will prevent damage of the high frequency transducer: 305P,
306P, and 308P MkII models:
1. Remove the outer shipping carton, if one exists.
2. Place the inner carton on the floor with the top facing upwards.
3. Open the top of the box.
4. Without removing the internal packaging end-cap, gently rotate the carton
so the open end rests on the floor and the bottom of the carton is facing you.
5. Gently lift the carton and allow the speaker and protective end-cap to
slide out of the carton and remain on the floor.
6. Save the cartons and use the above procedure in reverse when you want to
repack the units for shipment.
LSR310S subwoofer The subwoofer weighs 19 kg (42 lbs). Unpacking the
subwoofer does not require you to lift the subwoofer. However, you will need
to rotate the subwoofer in the carton. If you are unable to perform the
following steps without assistance, please request help from another person.
1. Remove the outer shipping carton, if one exists.
2. Place the carton on the floor with the bottom facing upward.
3. Open the bottom flaps of the carton and remove any protective packing
materials from the bottom of the subwoofer. Open the bag that protects the
subwoofer to expose the subwoofer’s four feet.
4. Gently rotate the carton so the bottom is facing the floor and the four
feet of the subwoofer are in contact with the floor.
5. Gently lift the carton and allow the subwoofer and protective packing
materials to slide out and remain on the floor.
6. Remove the protective packing materials and documentation from the top of
the subwoofer. Save the carton and use the above procedure in reverse when you
want to repack the unit for shipment.
PLACEMENT
3 Series MkII Studio Monitors are designed to deliver exceptional imaging in
any room. To get the most out of your speakers, follow these recommendations:
· Locate the four self-adhesive rubber pads supplied with the 305P, 306P, and
308P MkII speakers. Position and attach these to the bottom surface of the
speaker close to each corner.
· Position each 305P, 306P, or 308P MkII Studio Monitor in a vertical
orientation with the tweeter on top. Vertical orientation eliminates phase
shift and acoustic cancellation of frequencies that can occur when the
distance of the woofer to the ear is different from the distance of the
tweeter to the ear.
· Angle the speakers so the high-frequency transducer in each speaker is aimed
directly towards the ear of the listener. 7
· Ideally, 3 Series MkII Studio Monitors should be placed on suitable speaker
stands, rather than on the work surface. This will reduce resonance and
deterioration of low frequency performance caused by the speaker’s mechanical
coupling with the work surface.
· For optimum imaging, the left and right speakers should be placed
symmetrically in the room, so each speaker is the same distance from adjacent
walls and reflective surfaces.
· The speakers should be placed so the position of the listener and the two
speakers form an equilateral triangle. Adjusting the distance between the
speakers will affect the quality of bass heard at the listening position. You
can experiment with speaker placement to find the placement that produces the
preferred bass response, imaging, and–when listening to stereo
material–produces a strong “phantom center”, in which vocals and some
instruments seem to originate from a point between speakers.
· The listening distance can be determined according to your preference, the
acoustics of your room, and the maximum SPL (sound pressure level) you want to
hear at the listening position. You can find the speaker’s maximum SPL at 1
meter in the Specifications section at the end of this manual. Each doubling
of listening distance will reduce the SPL at the listening position by as much
as 6dB in an acoustically absorptive room, but only 3 or 4dB in an
acoustically reflective room.
LSR310S subwoofer placement: The low frequency driver of the LSR310S is
mounted on the bottom panel of the subwoofer. Before placing the subwoofer,
make sure the position on the floor is free of any large objects that can
interfere with or damage the woofer.
In a stereo system, the LSR310S subwoofer should be placed directly on the
floor, located between the left and right speakers. In a surround sound
system, the subwoofer can be located between the left and center or between
the right and center channel speakers. The distance of the subwoofer from the
listening position can be adjusted to produce the optimum bass in the system.
Placing the subwoofer close to a wall or in a corner generally will increase
the amount of bass heard in the room. Experiment to determine the Subwoofer
placement that produces the best balance and quality of bass in the system.
LEFT
SUB / LFE
RIGHT
SUB / LFE LEFT
CENTER
RIGHT
MIX POSITION
LEFT SURROUND
MIX POSITION
RIGHT SURROUND
8
AUDIO CONNECTIONS
NOTE: Before making audio connections, ensure the VOLUME control on each 3
Series speaker/subwoofer is set to the full counter-clockwise (minimum)
position. The 3 Series speakers are equipped with balanced XLR and 6mm (¼”)
TRS inputs for connection to professional computer audio interfaces, mixing
consoles, and audio production equipment, as well as unbalanced consumer audio
products such as personal music players, consumer audio receivers, and audio
visual equipment. Connect professional equipment with balanced outputs to the
XLR or 6mm (¼”) TRS input of the speaker using balanced audio cables. 3 Series
speakers are equipped with an INPUT SENSITIVITY switch, which is set to the
-10dBV setting at the factory. This setting will be best for many
applications. However, you should set the switch to the +4dBu setting under
the following conditions:
· When connecting 3 Series speakers to professional equipment with +4dBu
nominal output level. To determine the nominal output level of the connected
equipment, consult the documentation supplied with the connected equipment.
· The sound is distorted, even when the speaker VOLUME controls are set to
minimum settings NOTE: When using the LSR310S in a system with 3 Series MkII
Studio Monitors, set the INPUT SENSITIVITY switch on the 305P, 306P, or 308P
MkII speakers to the -10dBV setting regardless of the LSR310S INPUT
SENSITIVITY switch setting.
LSR310S POWERED STUDIO SUBWOOFER CONNECTIONS
The left and right outputs of the signal source should be connected directly
to the LEFT IN and RIGHT IN connectors of the subwoofer. The LEFT OUT and
RIGHT OUT connectors of the subwoofer should be connected to the inputs of the
left and right speakers respectively.
POWER CONNECTIONS
Connect the included IEC power cable to each 3 Series speaker and subwoofer.
The 3 Series speakers incorporate a universal power supply, allowing them to
be used domestically and internationally. The ground terminal of the IEC plug
is required by wiring codes and regulations and must always be connected to
the electrical installation safety ground.
MAKING SOUND
1. Ensure the VOLUME control on each 3 Series speaker/subwoofer is set to the
full counter-clockwise (minimum) position.
2. Power on the connected audio equipment (mixing console, computer audio
interface, preamp, etc.).
3. Set the POWER switch on each 3 Series speaker/subwoofer to the ON
position. After a short delay, the POWER LED on the front of each speaker will
illuminate and the speakers will be ready to reproduce audio signals.
4. Play full range program material from the source with ample low frequency
content so that you can properly judge the bass response of the system. Now
slowly advance the volume control of the source device until its nominal
operating level is achieved.
5. Slowly increase the VOLUME control on each 3 Series Studio Monitor until
the desired listening level is achieved and all speakers are matched in output
level to achieve a balanced image.
6. Balance the subwoofer in the system using the rear panel VOLUME control.
Additional balance of bass can be achieved by changing the placement of the
subwoofer in the room.
9
Section 4: 305P, 306P, and 308P MkII Powered Studio Monitors
Front View
Back View
1
2
6
3
4
5
7
8
FEATURES
1. HIGH FREQUENCY TRANSDUCER (TWEETER) This transducer reproduces high
frequency signals. 2. WAVEGUIDE The specially designed JBL Image Control
Waveguide enhances imaging and optimizes
the blend of direct and reflected sound in the room, ensuring neutral sound at
the mix position. 3. POWER LED This LED illuminates when power is connected
and the POWER switch is set to ON. Note
that after turning the power switch to the ON setting, there is a short delay
prior to illumination of the LED. 4. LOW FREQUENCY TRANSDUCER (WOOFER) This
transducer reproduces low frequencies. 5. DUST DOME Protects the inner
circuit of the woofer. This self-repairing dust dome is resistant to dents
caused by fingers and objects. 6. LOW FREQUENCY PORT The patented Slip
StreamTM Port works in conjunction with the low frequency
transducer to provide accurate low frequency performance. 7. INPUT PANEL
This panel includes the power connector, input connectors, and user controls.
8. PADS Four self-adhering pads are supplied with each studio monitor.
10
INPUT PANEL
9. XLR INPUT Connect professional equipment to this connector using a
balanced XLR plug. 10. 6MM (¼”) INPUT Connect professional equipment to this
connector using a 6mm (¼”) balanced plug.
Connect consumer equipment to this connector using a 6mm (¼”) unbalanced plug.
11. INPUT SENSITIVITY SWITCH Set this switch to +4dBu to protect from
overload when connecting to
professional equipment and sources with high output level capabilities. Set
this switch to -10dBV when connecting to lower-level consumer-grade audio
equipment or to the LSR310S subwoofer. 12. BOUNDARY EQ SWITCH This switch is
used to compensate for low frequency anomalies that may occur when speakers
are placed on a work surface or in close proximity to walls. Settings include
0dB, -1.5dB, and -3dB. Select the setting that provides the most natural bass
response for the application. 13. HIGH FREQUENCY TRIM SWITCH This switch
allows boost or attenuation of high frequency output by 2dB. Select the
setting that provides the desired high frequency response for the application.
14. VOLUME CONTROL Use this control to set the maximum listening level. 15.
POWER RECEPTACLE Connect the included power cord to this receptacle. 16.
POWER SWITCH This switch turns the speaker on or off.
11
9
10 12
14
13
15
16
AUDIO CONNECTIONS
Connect signal sources to either the XLR or 6mm (¼”) INPUT connectors. Connect
only a single signal source to the speaker using either the XLR INPUT
connector, OR the 6mm (¼”) TRS INPUT connector. Do not connect signal sources
to both input connectors simultaneously.
11
Section 5: LSR310S Powered Studio Subwoofer
Front View
Back View
4 2
5
1
3
3
Bottom View
1
FEATURES
1. LOW FREQUENCY TRANSDUCER (WOOFER) This transducer reproduces low
frequency signals. 2. POWER LED This LED illuminates when power is connected
and the POWER switch is set to ON. 3. FEET These feet elevate the subwoofer
to prevent acoustic coupling with the floor. 4. LOW FREQUENCY PORT This port
works in conjunction with the low frequency transducer to provide
accurate low frequency performance. 5. INPUT PANEL This panel includes the
power connector, input connectors, and user controls.
12
INPUT PANEL
6. RIGHT AND LEFT XLR INPUTS Connect professional equipment to these
connectors using balanced XLR plugs.
7. RIGHT AND LEFT 6MM (¼”) Connect professional equipment to these
connectors using 6mm (¼”) balanced plugs. Connect consumer equipment to these
connectors using 6mm (¼”) unbalanced plugs.
8. RIGHT AND LEFT XLR OUTPUTS Connect these outputs to the 3 Series MkII
speakers or other powered speakers or power amplifier in your monitoring
system.
9. INPUT SENSITIVITY SWITCH Set this switch to the +4dBu setting when
connecting professional equipment and sources with very high output. Set this
switch to -10dBV when connecting to lower-level consumer-grade audio
equipment.
NOTE: When the LSR310S is used in a system with 3 Series MkII speakers, set
the INPUT SENSITIVITY switch on the 305P, 306P, or 308P MkII to the -10dBV
setting regardless of the LSR310S input sensitivity switch setting.
10. VOLUME CONTROL Use this control to balance the volume of the subwoofer
with the volume of the speakers in the system.
11. CROSSOVER FREQUENCY This crossover provides three settings: 80Hz, XLF,
and External. The 80Hz setting is recommended for use with studio monitors,
including the 305P, 306P, or 308P MkII. The External setting allows use of an
outboard active crossover. Select the XLF (Extended Low Frequency) setting to
activate a circuit that emulates the bass tuning commonly applied to club
playback systems.
12. POLARITY Enables optional 180 degree polarity reversal of the subwoofer
output to optimize the blend of the subwoofer with the main speakers according
to relative speaker and listening positions. Select the setting that produces
the greatest amount of bass when heard at the listening position.
13. POWER RECEPTACLE Connect the included power cord to this receptacle.
14. POWER SWITCH Set this switch to the ON position to operate the
subwoofer. Set this switch to the OFF position when the subwoofer is not in
use.
8 7 6
12
9
11
10
13
14
13
AUDIO CONNECTIONS
Connect signal sources to either the XLR or 6mm (¼”) INPUT connectors. Connect
a single signal source to the speaker using either the XLR INPUT connectors,
OR the 6mm (¼”) TRS INPUT connectors. Do not connect multiple signal sources
to the XLR and 6mm (¼”) input connectors simultaneously. If the LSR310S
subwoofer is being used to reproduce the .1 LFE channel in a surround sound
system, connect the .1 LFE signal to either the LEFT or RIGHT input of the
subwoofer.
SETTING THE SUBWOOFER LEVEL
When the LSR310S subwoofer is used in a system with 3 Series MkII Studio
Monitors, the ideal balance is achieved when the position of the subwoofer
VOLUME control is set to the same position as the main speaker VOLUME
controls. However, note that the placement of the speakers in the room can
affect the amount of bass heard at the listening position. If more or less
subwoofer volume is desired, use the subwoofer VOLUME control to achieve the
optimum balance for the application and your preference.
PLACEMENT AND POLARITY SETTING
Because the human ear cannot easily recognize the origin of low frequency
sounds (the sounds are said to be “non-directional”), subwoofer placement is
not nearly as critical as main channel speaker positioning. The LSR310S is
designed to be placed directly on the floor and not elevated or mounted in any
way. Set the POLARITY switch to the setting that yields a stronger perceived
bass response at the listening position. In a stereo system, the subwoofer
should optimally be placed between the two main speakers. In a surround sound
system, the subwoofer should be placed between the center and left channel
speakers or the center and right channel speakers. Precise central placement
is not necessary. Centered positioning in the room can sometimes cause
unwanted cancellation of low frequency content, so it is recommended that the
subwoofer be placed slightly off-center and not at the midpoint between the
left and right walls.
14
CROSSOVER SETTINGS AND BASS MANAGEMENT
“Bass management” is a term that refers to the practice of using a subwoofer
to reproduce the bass frequencies of the main channels. Because of the
physiology of the human ear, low frequencies are largely non-directional.
Given an adequate listening distance, we can’t easily tell where bass signals
are coming from. Thus, it makes little or no difference to the listening
experience whether the bass component in a sound comes from the originating
speaker–which may be off to your left or right, or even behind you–or from a
dedicated subwoofer which is better equipped and better positioned in the room
to reproduce low frequencies. For that reason, you may want to use an LSR310S
subwoofer to reproduce all the bass frequencies in the system. When using an
LSR310S subwoofer in the system, bass management is accomplished by simply
routing the left and right mix channels to the LSR310S inputs and then from
the LSR310S outputs to the left and right speakers. The frequency at which the
subwoofer divides signals to the sub and the left and right speakers can be
set using the CROSSOVER FREQUENCY selector switch on the input panel of the
LSR310S. The LSR310S offers three crossover settings:
· 80Hz The 80Hz setting is recommended when the goal is a full range reference
monitor system that accurately portrays content below the cut-off frequency of
the main speakers. The 80Hz setting provides a smooth transition between the
subwoofer and main speakers without audible localization of bass, creating the
perception of a full range system with no subwoofer.
· XLF A trend in music production is the requirement for enhanced low
frequency response in the control room. Artists and producers involved in the
production of dance music appreciate the ability to audition their work as it
might sound when played on a system with enhanced low frequency tuning,
commonly employed in dance clubs.
A JBL first, the LSR310S includes a special XLF (Extended Low Frequency)
setting that emulates the response curve applied to a club playback system.
When the XLF crossover setting is selected, a 120Hz high-pass filter is
engaged in conjunction with a 10dB boost at 60Hz with a bandwidth of 0.5
octaves. Using this setting, the bass output more than doubles and the
character of the low frequency energy approximates that of a club system.
Continuous low frequency energy with very high peak SPL is made possible by
JBL’s new long excursion low frequency driver, working in concert with JBL’s
patented Slip StreamTM Port, and powered by a 200 watt Class-D amplifier. A
protective circuit allows the LSR310S to continuously produce low frequencies
at high output levels without failure. In situations where positioning will
allow, an additional 6dB of output can be achieved by positioning the LSR310S
subwoofer adjacent to a wall or at the intersection of two walls.
· External Select this setting when connecting the subwoofer to an external
active crossover. Note that when the External option is selected, the XLR LEFT
and RIGHT OUT connectors are disabled.
SURROUND SOUND SYSTEMS AND LFE
The LSR310S subwoofer can be used to reproduce the LFE (Low Frequency Effects)
or .1 channel in a surround sound system. In film production applications, the
LFE channel contains low frequency effects, such as the sounds of explosions
and other sounds with a strong low frequency component. In music applications,
the LFE channel usually contains low frequency instruments such as bass, bass
drum, and synthesizer elements.
15
Section 6: System Connections
LEFT SPEAKER (REAR PANEL)
TWO CHANNEL SYSTEMS
RIGHT SPEAKER (REAR PANEL)
SUBWOOFER (REAR PANEL)
MIXER 16
LEFT SPEAKER (REAR PANEL)
SURROUND SOUND SYSTEMS
CENTER SPEAKER (REAR PANEL)
RIGHT SPEAKER (REAR PANEL)
COMPUTER AUDIO SYSTEM
COMPUTER AUDIO INTERFACE
SUBWOOFER (REAR PANEL)
LEFT SURROUND SPEAKER
(REAR PANEL)
RIGHT SURROUND SPEAKER
(REAR PANEL)
17
Section 7: Troubleshooting
Issue: There is no sound from the speakers. · Confirm the power cable is
connected to the speaker and the POWER switch is set to the ON position. ·
Make sure the POWER LED is illuminated on the front of the speaker. · Make
sure a signal source is connected to the speaker and that it is producing
sound. · Make sure the speaker’s VOLUME control is not set to the full
counter-clockwise (minimum) position.
Issue: The signal is distorted. · Verify the speaker’s INPUT SENSITIVITY
switch is set to +4dBu. If the distortion persists, even with the
speaker’s VOLUME control set low, inspect the gain stages throughout the
system to determine which circuit in the signal path is being overdriven.
Issue: The signal level is low. · Ensure the speaker’s VOLUME control is
turned up. · Try setting the speaker’s INPUT SENSITIVITY switch to -10dBV.
Issue: The speaker or subwoofer sounds boomy. · If using the 305P, 306P, or
308P MkII Studio Monitors without the LSR310S Studio Subwoofer, try lifting
one of the speakers off of the supporting surface to see if the boominess is
lessened. If it is, the speaker is likely resonating through the surface it is
sitting upon. Try isolating the speakers using a third-party speaker isolation
product. Alternatively, try engaging the BOUNDERY EQ on the speakers. Try both
the -1.5dB and -3dB settings to determine which setting provides the most
natural bass response. · If using the LSR310S Studio Subwoofer, try locating
the subwoofer in a different position in the room, away from corners. Try
placing the subwoofer at the listening position and walk around the room while
listening to the system. When you find a practical position that provides the
desired bass response, try placing the subwoofer at that location. If the
above measures do not correct the problem, please contact JBL Professional
Customer Service for assistance.
18
Section 8: Specifications
Frequency Range (-10dBV): Crossover:
Maximum Continuous SPL:
Maximum Peak SPL: Maximum Peak Input Level
(-10dBV / +4dBu): Input Connectors: Input Sensitivity:
(-10dBV input) HF Driver Size:
LF Driver Size:
HF Driver Power Amp:
LF Driver Power Amp:
HF Trim Control:
Boundary EQ Control:
AC Input Voltage:
Enclosure Construction:
Enclosure Finish:
Baffle Construction: Cabinet Dimensions
(H x W x D***): Display Carton
(H x W x D): Shipping Carton
(H x W x D): Net Weight:
Shipping Weight:
305P
43Hz 24kHz 1725Hz 4th Order Acoustic Linkwitz-Riley 94 dB
108dB
+6dBV / +20.3dBu
1 x XLR, 1 x TRS balanced
92dB / 1m
25mm (1″)
127mm (5″)
41W Class-D
41W Class-D HF Shelf @ 4.4kHz: +2dB, 0dB, -2dB LF Shelf @ 50Hz: -3dB, -1.5dB,
0dB 100 240 VAC (±10%), 50/60Hz 15mm MDF
Matte Black PVC Injection-Molded Structural ABS 298 x 185 x 231mm (11.7″ x
7.3″ x 9.1″) 354 x 244 x 299mm (13.9″ x 9.6″ x 11.8″) 373 x 260 x 315mm (14.7″
x 10.2″ x 12.4″) 4.73 kg (10.43 lbs)
5.72 kg (12.61 lbs)
306P
39Hz 24kHz 1425Hz 4th Order Acoustic Linkwitz-Riley 98 dB
110dB
+6dBV / +20.3dBu
1 x XLR, 1 x TRS Balanced
92dB / 1m
25mm (1″)
165mm (6.5″)
56W Class-D
56W Class-D HF Shelf @ 4.4kHz: +2dB, 0dB, -2dB LF Shelf @ 50Hz: -3dB, -1.5dB,
0dB 100 240 VAC (±10%), 50/60Hz 15mm MDF
Matte Black PVC Injection-Molded Structural ABS 361 x 224 x 282mm (14.2″ x
8.8″ x 11.1″) 408 x 285 x 328mm (16.1″ x 11.2″ x 12.9″) 418 x 292 x 338mm
(16.5″ x 11.5″ x 13.3″) 6.1 kg (13.42 lbs)
7.25 kg (15.95 lbs)
308P
37Hz 24kHz 1800Hz 4th Order Acoustic Linkwitz-Riley 102 dB
112dB
+6dBV / +20.3dBu
1 x XLR, 1 x TRS Balanced
92dB / 1m
25mm (1″)
203mm (8″)
56W Class-D
56W Class-D HF Shelf @ 4.4kHz: +2dB, 0dB, -2dB LF Shelf @ 50Hz: -3dB, -1.5dB,
0dB 100 240 VAC (±10%), 50/60Hz 15mm MDF
Matte Black PVC Injection-Molded Structural ABS 419 x 254 x 308mm (16.5″ x 10″
x 12.1″) 473 x 312 x 358mm (18.6″ x 12.3″ x 14″) 491 x 326 x 372mm (19.3″ x
12.8″ x 14.6″) 8.1 kg (17.87 lbs)
9.4 kg (20.73 lbs)
- Full bandwidth pink noise, measured C-Weighted ** Measured in half space *** Depth measured without power cord and audio connectors
(typical power cord = 2 inches, typical XLR connector = 2.5 inches)
LSR310S
27Hz
– – 105 dB 113dB +6dBV / +20.3dBu 2 x XLR, 2 x TRS Balanced 92dB / 1m – –
250mm (10″) – – 200W Class-D – – –
– – –
100-240 VAC +/- 10% 50/60Hz 18mm (3/4 in) MDF Matte Black PVC – – 448 x 381 x
398mm (17.65″ x 15.0″ x 15.65″) 505 x 466 x 476mm (19.9″ x 18.3″ x 18.7″) 520
x 478 x 488mm (20.5″ x 18.8″ x 19.2″) 15.6 kg (34.3 lbs) 19.1 kg (42 lbs)
19
Section 9: JBL Service Contact Information
MAILING ADDRESS:
JBL Professional 8500 Balboa Blvd. Northridge, CA 91329
SHIPPING ADDRESS:
Please contact JBL Professional Customer Service for shipping information
prior to repairs.
CUSTOMER SERVICE:
Monday through Friday 8:00am 5:00pm Pacific Coast Time in the U.S.A. (800)
8JBLPRO (800.852.5776) www.jblproservice.com
PRODUCT REGISTRATION:
Register your product online at www.jblpro.com/registration
ON THE WORLD WIDE WEB:
www.jblpro.com
PROFESSIONAL CONTACTS, OUTSIDE THE USA:
Contact the JBL Professional Distributor in your area. A complete list of JBL
Professional international distributors is provided at our U.S.A. website:
www.jblpro.com
EN DEHORS DES ETATS-UNIS:
Contacter votre Distributeur JBL Professional. Une liste complète de nos
distributeurs internationaux est disponible sur le site web–www.jblpro.com
INTERNATIONAL:
Wenden Sie sich an Ihre örtliche JBL Professional Vertretung. Eine
vollständige Liste der internationalen JBL-Vertretungen finden Sie auf unserer
Website unter www.jblpro.com
FUERA DE LOS ESTADOS UNIDOS:
Comuníquese con el distribuidor de JBL Professional de su zona. En nuestro
sitio web, www.jblpro.com, encontrará una lista completa de los distribuidores
de JBL International.
20
Section 10: Product Warranty Information
The JBL Limited Warranty on professional loudspeaker products (except for
enclosures) remains in effect for five years from the date of the first
consumer purchase. JBL amplifiers are warranted for three years from the date
of original purchase. Enclosures and all other JBL products are warranted for
two years from the date of original purchase.
WHO IS PROTECTED BY THIS WARRANTY?
Your JBL Warranty protects the original owner and all subsequent owners so
long as: A.) Your JBL product has been purchased in the Continental United
States, Hawaii or Alaska. (This Warranty does not apply to JBL products
purchased elsewhere except for purchases by military outlets. Other purchasers
should contact the local JBL distributor for warranty information.); and B.)
The original dated bill of sale is presented whenever warranty service is
required.
WHAT DOES THE JBL WARRANTY COVER?
Except as specified below, your JBL Warranty covers all defects in material
and workmanship. The following are not covered: Damage caused by accident,
misuse, abuse, product modification or neglect; damage occurring during
shipment; damage resulting from failure to follow instructions contained in
your Instruction Manual; damage resulting from the performance of repairs by
someone not authorized by JBL; claims based upon any misrepresentations by the
seller; any JBL product on which the serial number has been defaced, modified
or removed.
WHO PAYS FOR WHAT?
JBL will pay all labor and material expenses for all repairs covered by this
warranty. Please be sure to save the original shipping cartons because a
charge will be made if replacement cartons are requested. Payment of shipping
charges is discussed in the next section of this warranty.
HOW TO OBTAIN WARRANTY PERFORMANCE
If your JBL product ever needs service, write or telephone us at JBL
Incorporated (Attn: Customer Service Department), 8500 Balboa Boulevard, PO.
Box 2200, Northridge, California 91329 (818/893-8411). We may direct you to an
authorized JBL Service Agency or ask you to send your unit to the factory for
repair. Either way, you’ll need to present the original bill of sale to
establish the date of purchase. Please do not ship your JBL product to the
factory without prior authorization. If transportation of your JBL product
presents any unusual difficulties, please advise us and we may make special
arrangements with you. Otherwise, you are responsible for transporting your
product for repair or arranging for its transportation and for payment of any
initial shipping charges. However, we will pay the return shipping charges if
repairs are covered by the warranty.
LIMITATION OF IMPLIED WARRANTIES
ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE LENGTH OF THIS
WARRANTY.
EXCLUSION OF CERTAIN DAMAGES
JBL’S LIABILITY IS LIMITED TO THE REPAIR OR REPLACEMENT, AT OUR OPTION, OF ANY
DEFECTIVE PRODUCT AND SHALL NOT INCLUDE INCIDENTAL OR CONSEQUENTIAL DAMAGES OF
ANY KIND. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY
LASTS AND/OR DO NOT ALLOW THE EXCLUSION OF INCIDENTAL OR CONSEQUENTIAL
DAMAGES, SO THE ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU. THIS
WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS,
WHICH VARY, FROM STATE TO STATE.
JBL Professional 8500 Balboa Boulevard Northridge, CA 91329 USA Visit us
online at www.jblpro.com
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Part Number: 5096517-00-A