Crown Audio CSL Series 460 Power Amplifier Owner’s Manual
- June 12, 2024
- Crown Audio
Table of Contents
- Crown Audio CSL Series 460 Power Amplifier
- Product Information
- Welcome
- Installation
- Operation
- Specifications
- Crown specifications are guaranteed for three years.
- Accessories
- Service
- THREE YEAR FULL WARRANTY
- Crown Factory Service Information
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
Crown Audio CSL Series 460 Power Amplifier
Product Information
The CSL Series is a power amplifier that has a maximum output of 230 watts per channel into 4 ohms at 1 KHz with no more than 0.1% THD. It is made in Elkhart, IN and is designed for parallel mono, stereo, and bridge mono wiring. The amplifier has balanced input wiring and requires Class 2 output wiring. It comes with a three-year full warranty and is designed for commercial audio use.
Welcome
Congratulations on your purchase of a Crown® CSL® amplifier. CSL amplifiers
are compact, professional stereo power amplifiers engineered to meet the most
demanding sound reinforcement needs. They compare very favorably to more
expensive amplifiers, providing uncolored sound and signal-to-noise ratios
more commonly associated with recording studios.
This manual will help you successfully install and use your amplifier–we
strongly recommend you read all instructions, warnings and cautions. If you
plan to operate in one of the two mono modes, be sure to read the Mono
section. Also for your protection, please save your bill of sale as it is your
official proof of purchase.
Unpacking
Please unpack and inspect your new amplifier for any damage that may have
occurred during transit. If damage is found, notify the transportation company
immediately. Only you may initiate a claim with the carrier for damage
resulting during shipment. Even if the unit arrived in perfect condition, as
most do, save all packing materials so you will have them if you ever need to
transport the unit. NEVER SHIP THE UNIT WITHOUT THE FACTORY PACK.
Features
- Rugged, professional power amplifier mounts in a standard 19 inch (48.3 cm) equipment rack.
- Front panel power switch with turn-on delay for loudspeaker protection.
- Full, uncolored power with any reasonable load.
- Patented Output Device Emulation Protection (ODEP® ) keeps the amplifier working when others would fail.
- High damping factor provides superior control over low frequency drivers for a clean, accurate low end.
- Safe with any load. Bridge-Mono and Parallel-Mono modes offer optimal load-matching performance.
- Complete protection against shorted outputs, mismatched loads, overheating, DC input/output and high frequency overload; full internal fault protection.
- Balanced phone jack inputs with internal three-position sensitivity switch. Optional XLR or barrier block input connectors are available with the MT-XLR and MT-BB accessories.
- Ground lift switch helps prevent “ground loops” by isolating the chassis from the phone input grounds.
- Efficient heat sinks and self-contained forced air cooling system dissipate heat quickly and evenly for extra amplifier protection and greater power output.
- Three year “No-Fault” full warranty and guaranteed specifications protect your investment.
Installation
Always remove power from the unit and turn the level controls off when making
connections. This reduces the chance of loudspeaker damage from loud blasts.
Follow the guidelines listed next as well as the steps required for the
specific mode of operation:
-
Install the amplifier in a standard 19 inch (48.3 cm) rack or place it on a stable surface. The mounting dimensions are 19 inches (48.3 cm) wide, 3.5 inches (8.9 cm) tall and 16 inches (40.6 cm) deep behind the mounting surface.
IMPORTANT: Allow for adequate ventilation.
-
Use high-quality loudspeaker cables to connect the load to the amplifier’s output jacks. Do not use shielded cable. Banana plugs are recommended for this connection.
-
Use shielded cables to connect audio sources to the amplifier inputs. Either balanced or unbalanced wiring can be used as shown below. (XLR connectors are available with the MT-XLR accessory. See Section 5.)
-
An appropriate AC cord and plug are provided. Use an isolated wall outlet with the correct voltage and adequate current. Voltages more than 10% over the amplifier’s rated voltage may damage the ±15 volt regulator, filter capacitors and output transistors.
Stereo
- Turn the level controls down (fully counterclockwise) and turn off the amplifier.
- Set the back panel stereo/mono switch to Stereo.
- If present, remove the Parallel-Mono jumper.
- Connect the input and output cables as shown in the first example in Figure 2.3.
- Turn on the amplifier and adjust the level for each channel with the back panel level controls.
CAUTION: In Stereo mode, never parallel the two outputs by directly tying them together, and never parallel them with the output of another amplifier.
Mono
The monaural operating modes provide twice the power to one channel as the
Stereo mode. In BridgeMono mode, the outputs are wired in series for twice the
output voltage. In Parallel-Mono mode, the outputs are paralleled for twice
the current capacity.
Bridge-Mono mode is provided for loads with an impedance greater than 4 ohms.
Parallel-Mono mode should be used with loads of 4 ohms or less.
BRIDGE – MONO
- Turn the level controls down (fully counterclockwise) and turn off the amplifier.
- Set the back panel stereo/mono switch to Bridge-Mono.
- If present, remove the Parallel-Mono jumper.
- Connect the input and output cables as shown in the second example in Figure 2.3. Use the Ch.1 input only.
- Make sure the load is balanced (neither side shorted to ground) and do not use the black () banana jacks.
- Turn on the amplifier and adjust the level. Use the Ch.1 level control only.
PARALLEL – MONO
- Turn down the level controls (fully counterclockwise) and turn off the amplifier.
- Set the back panel stereo/mono switch to Parallel-Mono.
- Install a solid jumper (at least 14 gauge) across the output between the two red (+) banana jacks.
- Connect the input and output cables as shown in the third example in Figure 2.3. Use the Ch.1 input only.
- Turn on the amplifier and adjust the level. Use the Ch.1 level control only.
CAUTION: When wired for Parallel-Mono mode, do not attempt to operate the amplifier in Stereo or Bridge-Mono mode until the output jumper is removed. Failure to do so will result in inefficient operation, distortion and excessive heating.
Input Sensitivity Adjustment
The input sensitivity switch inside the amplifier is set to 0.775 volts at the
factory. It can be changed to 1.4 volts or a voltage gain of 26 dB as follows:
- Turn off and unplug the amplifier from the AC source.
- Remove the access cover on the back panel.
- Locate the labeled access hole for the sensitivity switch.
- Set the switch to the desired position.
- Replace the access cover plate.
When set to 26 dB gain, the 460 CSL requires a 2.0 volt input, the 800 CSL requires a 2.5 volt input and the 1400 CSL requires a 3.2 volt input to deliver full output into an 8 ohm load.
Additional Load Protection
Because CSL amplifiers can generate enormous power, it may be desirable to
protect loudspeakers from damage due to excessive power. A common way to do
this is to put a fuse in series with the load. This may be accomplished with a
single fuse to protect the entire system, or by fusing each driver separately.
Use Figure 2.4 to find the correct fuse.
Example: (A) Choose the peak music power for the loudspeaker (such as 75
watts). (B) Find the loudspeaker impedance (8 ohms). (C) Draw a line between
points A and B. The line intersects the middle scale at the correct fuse value
(1.5 amps).
Operation
Precautions
Although your amplifier is protected from external faults, the following
safety precautions are recommended:
- There are important differences among the Stereo, Bridge-Mono and Parallel-Mono operating modes. Refer to Sections 2.1 and 2.2.
- WARNING: Do not change the stereo/mono switch unless the amplifier is first turned off.
- CAUTION: In Parallel-Mono mode, a jumper is installed between the red output posts. Be sure to remove this jumper for Bridge-Mono or Stereo mode, otherwise inefficient operation, high distortion and excessive heating will occur. Also, check the stereo/mono switch for proper position.
- Use care when making connections, selecting signal sources and controlling the output level.
- Do not short the ground lead of an output cable to the input signal ground. This may form a ground loop and cause oscillations.
- Operate the amplifier from AC mains of not more than 10% variation above or below the selected line voltage and only at the specified line frequency.
- Never connect the output to a power supply output, battery or power main.
- Circuit tampering by unqualified personnel, or making unauthorized circuit changes voids the warranty.
Remember: Crown is not liable for any damage that results from overdriving other system components.
Indicators
When lit, the amber LED shows that the unit is turned on, and the low voltage
power supply is working. It does not show the status of the high voltage
supplies.
Protection Systems
CSL amplifiers have extensive protection systems, including ODEP, ultrasonic/RF protection, drive protection, transformer thermal protection and fuses or circuit breakers that protect the power supplies.
ODEP
Crown invented ODEP to prevent amplifier shutdown during demanding operation
and to increase the efficiency of the output circuitry. To do this, Crown
established a rigorous program to measure the safe operating area (SOA) of
each output transistor. Then, Crown designed intelligent circuitry to simulate
instantaneous transistor conditions. Its name describes what it does: Output
Device Emulation Protection, or ODEP. In essence, ODEP compares transistor
conditions to their known SOA. If more power will be asked of them than they
can deliver with the present conditions, ODEP limits the drive until
conditions fall within the SOA. Limiting is proportional and kept to an
absolute minimum– only what is required to prevent output transistor damage.
Under normal conditions, no limiting is required and ODEP is transparent to
the audio signal.
ODEP makes possible a quantum leap in output efficiency and reliability–with
ODEP, the show goes on.
Ultrasonic and Radio Frequency (RF) Protection
CSL amplifiers have a controlled slew rate. This means that their design
limits the frequencies that they can reproduce. The limiting occurs far above
audible frequencies (20 Hz to 20 kHz), but it protects sensitive loads like
tweeters from ultrasonic and radio frequencies. An amplifier’s slew rate only
needs to be large enough to deliver the maximum voltage at the highest
required frequency–higher slew rates actually allow undesirable frequencies to
be reproduced.
Drive Protection
The drive protection system temporarily removes output drive to protect the
amplifier and its loads. Drive protection can be activated in two situations.
First, if dangerous subsonic frequencies or direct current (DC) is detected in
the amplifier’s output, the unit will activate its DC/low frequency protection
circuitry which also activates drive protection mode. This protects the loads
and prevents oscillations. The unit resumes normal operation as soon as
dangerous output is no longer detected. Although it is extremely unlikely that
you will ever activate the DC/low frequency protection system, improper source
materials like subsonic square waves or input overloads that excessively clip
the input signal can activate this system.
The amplifier’s fault protection system will activate drive protection mode in
rare situations where the output devices see heavy common-mode current. The
output devices should never see heavy common-mode current unless the circuitry
is damaged. Activating drive protection helps prevent further damage.
Transformer Thermal Protection
CSL amplifiers have transformer thermal protection. This protection circuitry
is activated in unusual situations where the unit’s transformer temperature
rises to unsafe levels. Under these abnormal conditions, the unit removes
power to the high voltage transformer (the fan will also run in 120 VAC, 60 Hz
units). The amplifier will return to normal after it cools to a safe
temperature.
It is very unlikely that you will ever see a CSL amplifier activate
transformer thermal protection as long as it is operated within rated
conditions. The amplifier is designed to keep working under conditions where
other amplifiers would fail. But even when the limits of a CSL are exceeded,
it still protects itself–and your investment–from damage.
Fuses and Circuit Breakers
The power supplies for the 460 CSL and 800 CSL are protected by fuses, while
the power supplies for the 1400 CSL are protected by a circuit breaker. With
rated loads and output levels, these fuses (or the circuit breaker) should
only shut down the amplifier in the incredibly rare instance of a catastrophic
amplifier failure. Other protection systems such as ODEP keep the amplifier
operational under most other severe conditions. The fuses (or breaker) can
also shut down the amplifier in situations where extremely low-impedance loads
and high output levels result in current draw that exceeds their rating.
Again, this should only be possible when operating outside rated conditions,
such as driving a 1 ohm load or overloading the input and creating a severely
clipped signal.
All 120 VAC, 60 Hz units and all 1400 CSL units have a separate fuse for the
low-voltage power supply and cooling fan. Additionally, all units have
separate fuses (or a breaker) for the high-voltage power supplies.
A CSL amplifier will not blow its fuses (or breaker) unless something is
wrong. In the rare event that an internal fuse blows, please refer the unit to
a qualified technician. If the breaker in a 1400 CSL trips, try to identify
and correct the problem before resetting the breaker with the back panel reset
switch. If the problem persists, refer the unit to a qualified technician.
Controls
The enable switch is located on the front panel so you can easily turn the
amplifier on and off. When making any setup or wiring changes, don’t forget to
turn off the amplifier, turn down the level controls and disconnect the power
cord. The back panel stereo/mono switch is used to select Stereo, Bridge-Mono
or Parallel-Mono operating modes (see Sections 2.1 and 2.2). The level
controls are also located on the back panel. Be sure to leave channel 2 turned
down when using Bridge-Mono mode. The back panel ground lift switch isolates
the phone jack input grounds from the chassis ground to help prevent ground
loops. It does not affect any installed input accessories. The input
sensitivity switch is located inside the back cover plate. It is used to set
the amplifier’s input sensitivity (see Section 2.3). And the 1400 CSL has a
back panel reset switch that is used to reset the breaker that protects the
amplifier’s power supplies (see Section 3.3.5).
Filter Cleaning
A dust filter is provided on the unit’s air intake. If it becomes clogged, the
unit will cool less efficiently and may produce lower output levels. To clean,
remove the three phillips screws that secure the front grille. Use mild
dishwashing detergent and warm water for best results. New filters may be
ordered from the factory. Dust filters are not 100% efficient–depending on the
local environment, the internal heat sinks of the amplifier will benefit from
periodic cleaning by a qualified technician. Internal cleaning information is
available from our Technical Support Group.
Specifications
The following applies to units in Stereo mode with 8 ohm loads and an input sensitivity of 26 dB unless otherwise specified.
- Standard 1 kHz Power: refers to maximum average power in watts at 1 kHz with 0.1% THD.
- Full Bandwidth Power: refers to maximum average power in watts from 20 Hz to 20 kHz with 0.1% THD.
- 120 VAC, 60 Hz Units: refers to amplifiers with dedicated transformers for 120 VAC, 60 Hz power mains.
- International Units: refers to amplifiers with special multi-tap transformers that make them configurable for several AC mains voltages and line frequencies.
Performance
- Frequency Response: ±0.1 dB from 20 Hz to 20 kHz at 1 watt.
- Phase Response: ±10 degrees from 10 Hz to 20 kHz at 1 watt.
- Signal-to-Noise Ratio: A-weighted, better than 105 dB below full bandwidth power. No weighting, better than 100 dB below full bandwidth power.
- Total Harmonic Distortion (THD): Less than 0.05% at full bandwidth power from 20 Hz to 1 kHz increasing linearly to 0.1% at 20 kHz.
- Intermodulation Distortion (IMD): (60 Hz and 7 kHz) Less than 0.05% from less than 158 milliwatts to full bandwidth power.
- Damping Factor: Greater than 1,000 from 10 Hz to 400 Hz.
- Crosstalk
- 460 CSL: Greater than 75 dB below full bandwidth power from 50 Hz to 2 kHz, rising linearly to greater than 60 dB at 20 kHz.
- 800 CSL: Greater than 90 dB below full bandwidth power from 50 Hz to 2 kHz, rising linearly to greater than 66 dB at 20 kHz.
- 1400 CSL: Greater than 90 dB below full bandwidth power from 50 Hz to 4 kHz, rising linearly to greater than 70 dB at 20 kHz.
- Slew Rate: Greater than 13 volts per microsecond.
- Voltage Gain: 20:1 ±3% or 26 dB ±0.25 dB at the maximum level setting.
- 460 CSL: 51:1 ±12% or 34.3 dB ±1 dB at 0.775 volt sensitivity; 28:1 ±12% or 29.1 dB ±1 dB at 1.4 volt sensitivity.
- 800 CSL: 64:1 ±12% or 36.2 dB ±1 dB at 0.775 volt sensitivity; 35:1 ±12% or 31.0 dB ±1 dB at 1.4 volt sensitivity.
- 1400 CSL: 83:1 ±12% or 38.4 dB ±1 dB at 0.775 volt sensitivity; 46:1 ±12% or 33.3 dB ±1 dB at 1.4 volt sensitivity.
Power
Output Power: The following specifications are guaranteed minimums for standard 1 kHz power from 120 VAC, 60 Hz North American units. For additional information and power specifications for international units, see the power matrices on the pages that follow.
- 460 CSL
- Stereo mode (both channels driven): 240 watts into 4 ohms. 200 watts into 8 ohms.
- Bridge-Mono mode: 455 watts into 8 ohms. 395 watts into 16 ohms.
- Parallel-Mono mode: 455 watts into 2 ohms. 400 watts into 4 ohms.
- 800 CSL
- Stereo mode (both channels driven): 425 watts into 4 ohms. 300 watts into 8 ohms.
- Bridge-Mono mode: 900 watts into 8 ohms. 645 watts into 16 ohms.
- Parallel-Mono mode: 905 watts into 2 ohms. 640 watts into 4 ohms.
- 1400 CSL
- Stereo mode (both channels driven): 700 watts into 4 ohms. 500 watts into 8 ohms.
- Bridge-Mono mode: 1,500 watts into 8 ohms. 1,075 watts into 16 ohms.
- Parallel-Mono mode: 1,515 watts into 2 ohms. 1,050 watts into 4 ohms.
Load Impedance
Safe with all types of loads. Rated for 4 to 8 ohms in Stereo, 8 to 16 ohms in
Bridge-Mono and 2 to 4 ohms in Parallel-Mono mode.
Required AC Mains
50 to 60 Hz; 100, 120, 220, 230 and 240 VAC (±10%) units are available. All
draw 90 watts or less at idle. Current, frequency and voltage requirements are
provided on each unit’s back panel.
- 460 CSL: 100 and 120 VAC units draw up to 6 amps of current; 220 and 240 VAC units draw up to 3 amps.
- 800 CSL: 100 and 120 VAC units draw up to 10 amps of current; 220 and 240 VAC units draw up to 5 amps.
- 1400 CSL: 100 and 120 VAC units draw up to 15 amps of current; 220 and 240 VAC units draw up to 7 amps.
Sufficient AC power must be provided to the amplifier. Amplifiers cannot create energy–they require proper voltage and current to deliver the power you expect.
Low-Voltage Power Supply
A ±24 VDC fan former supply (fan motor winding) regulated to ±15 VDC.
AC Connector
An appropriate AC line cord and plug are provided. North American units have a
standard 3-wire, 15 amp grounded connector (NEMA 5-15P).
Controls
- Enable: A front panel rocker switch used to turn the amplifier on and off.
- Level: A back panel rotary potentiometer for each channel used to control the output level.
- Stereo/Mono: A three-position back panel switch used to select Stereo, Bridge-Mono or Parallel-Mono mode.
- Sensitivity: A three-position switch inside the back cover plate used to select the input sensitivity for both channels: 0.775 volts or 1.4 volts for standard 1 kHz power, or 26 dB
- voltage gain (see Section 2.3).
- Ground Lift: A two-position back panel switch used to isolate the phone jack input ground from the AC ground.
- Reset (1400 CSL only): A back panel push button used to reset the circuit breaker that protects the power supplies.
Indicators
- Enable: This amber indicator shows the on/off status of the low voltage power supply.
Input / Output
- Input Connector: Two balanced ¼ inch phone jacks. See Section 5 for XLR and barrier block accessories.
- Input Impedance: Nominally 20 K ohms, balanced; 10 K ohms, unbalanced.
- Output Connector: Two sets of color-coded 5-way binding posts (for banana plugs, spade lugs or bare wire).
- Output Impedance: Less than 10 milliohms in series with less than 2 microhenries.
- DC Output Offset: Less than 10 millivolts.
Output Signal
- Stereo: Unbalanced, two-channel.
- Bridge-Mono: Balanced, single-channel. Channel 1 controls are active; Channel 2 should not be used.
- Parallel-Mono: Unbalanced, single-channel. Channel 1 controls are active; Channel 2 should not be used.
Protection
CSL series amplifiers are protected against shorted, open or mismatched loads;
overloaded power supplies; excessive temperature, chain destruction phenomena,
input overload damage and high-frequency blowups. They also protect
loudspeakers from input and output DC, as well as providing protection from
turn-on/turn-off transients.
If operating conditions are unreasonable, the patented ODEP circuitry
proportionally limits the drive level to protect output transistors,
particularly in the case of elevated temperature. A thermal switch imbedded in
the transformer protects the power supplies from overload. In the rare event
that a transformer overheats, the thermal switch removes power, waits until
the unit has cooled to a safe temperature and resets itself. Controlled slew
rate voltage amplifiers protect the unit from RF burnouts, and current-
limiting resistance protects the input circuitry from overload. (Refer to
Section 3.3.)
- Turn On: No dangerous transients. The four second (approximate) turn-on delay can be changed. Contact Crown’s Technical Support Group for details.
Construction
Durable black finish on steel chassis with special “flowthrough” ventilation
from front to side panels.
- Cooling: Internal heat sinks with forced air cooling for rapid, uniform heat dissipation.
- Dimensions: Standard 19 inch (48.3 cm) rack mount width (EIA RS-310-B), 3.5 inch (8.9 cm) height and 16 inch (40.6 cm) depth behind the mounting surface.
- Approximate Weight: Center of gravity is 6 inches (15.2 cm) behind front mounting surface.
- 120 VAC, 60 Hz Units:
- 460 CSL: 30 pounds (13.6 kg) net; 34 pounds (15.4 kg) shipping weight.
- 800 CSL: 34 pounds (15.4 kg) net; 38 pounds (17.2 kg) shipping weight.
- 1400 CSL: 36 pounds, 2 ounces (16.4 kg) net; 40 pounds (18.2 kg) shipping weight.
- International Units: 460 CSL: 30 pounds, 12 ounces (14.0 kg) net; 35 pounds, 1 ounce (15.9 kg) shipping weight.
- 800 CSL: 35 pounds, 10 ounces (16.2 kg) net; 39 pounds, 11 ounces (18.0 kg) shipping weight.
- 1400 CSL: 37 pounds, 3 ounces (16.9 kg) net; 40 pounds, 15 ounces (18.6 kg) shipping weight.
Crown specifications are guaranteed for three years.
In an effort to provide you with as much information as possible about the high power-producing capabilities of your amplifier, we have created the following power matrices.
Minimum Power Specifications
Crown’s minimum power specifications represent the absolute smallest amount of
output power you can expect from your amplifier when it is driven to full
output under the given conditions. Some spaces in each matrix may be left
blank because the same guarantee is not provided for those conditions–however,
your amplifier will perform well under all conditions listed in each matrix.
When measuring power, we use THD plus noise as the reference because it is a
more demanding test than true THD. Power tests also require a reference
distortion level, and 0.1% THD appears to be the industry standard. Two of the
maximum average power ratings in each minimum power matrix are measured at
0.1% THD plus noise so you can easily compare Crown specifications to those of
other manufacturers. But this high level of distortion actually allows for
some clipping which is undesirable. Because of this, a maximum average power
specification at 0.05% THD plus noise is included in each minimum power matrix
to represent non-clipped conditions. Although most manufacturers do not give
you power specifications at 0.05% THD, we encourage them to provide these
specifications so you will have a more realistic representation of the way
amplifiers should be used in the real world without a clipped output signal.
Many manufacturers publish power specs with a tolerance of ±1 dB or worse.
This means their amplifier can deviate more than 20% in output! A 100 watt
amplifier would meet their specification if it only produced 79.4 watts. Other
manufacturers qualify their specs by saying they are “typical,” “subject to
manufacturing tolerances,” “single channel driven” or that they are specified
with “fuses bypassed.” Each of these statements effectively removes any
performance guarantee. In fact, some manufacturers use these tactics to
generate large power numbers, and they don’t even print a disclaimer. We take
a different approach at Crown–our amplifiers are guaranteed to meet or exceed
their specifications for three years. Further, because our published specs are
set below our “in-house” measurements, you can expect every Crown amplifier to
exceed its published minimum power specs. We believe you should get what you
pay for.
Minimum Power Notes: All minimum power specifications are based on 0.5% regulated AC mains with THD of less than 1.0% and an ambient room temperature of 70° F (21° C). International units with multi-tap transformers are specified for the worst-case transformer tap (normally 100 VAC, 50 Hz). The standard EIA power measurement (RS-490) is not identified here because it is identical to the FTC Continuous Average Power specification.
- A 1 kHz sine wave is presented to the amplifier and the output monitored for nonlinear distortion. The level is increased until THD plus noise reaches 0.1%. At this level the average power per channel is reported.
- A sine wave is presented to the amplifier over the range from 20 Hz to 20 kHz and the output monitored for nonlinear distortion. The level at each frequency is increased until THD plus noise reaches 0.1%. At this level the average power per channel is reported.
- A 1 kHz sine wave is presented to the amplifier and the output monitored for nonlinear distortion. The level is increased until THD plus noise reaches 0.05%. At this level the average power per channel is reported.
- Continuous power in the context of Federal Trade Commission testing is understood to be a minimum of five minutes of operation. THD plus noise is measured as the RMS sum total and given as a percentage of the fundamental output voltage. This applies for all wattages greater than 0.25 watts.
460 CSL – Minimum Guaranteed Power (Watts)
AC Mains|
Stereo/Mono Mode
| Load (Ohms)| Maximum Average| FTC Continuous Average
0.1% THD+N
(See note 4)
0.1% THD+N
(See note 1)
| 0.1% THD+N
(See note 2)
| 0.05% THD+N
(See note 3)
1 kHz| 20Hz-20kHz| 1 kHz| 1 kHz| 20Hz-20kHz
120 VAC, 60 Hz Units| Stereo (both channels driven)|
4| 240| | 235| |
8| 200| 185| 200| 200| 180
Bridge- Mono
(balanced output)
| 8| 455| | 455| |
16| 395| 370| 390| 390| 350
Parallel- Mono
| 2| 455| | 445| |
4| 400| | 395| 390|
International Units| Stereo (both channels driven)| 4| 230| |
225| |
8| 205| 185| 200| 200| 175
Bridge- Mono
(balanced output)
| 8| 465| | 455| |
16| 410| 375| 405| 390| 350
Parallel- Mono
| 2| 440| | 430| |
4| 410| | 405| 390|
800 CSL – Minimum Guaranteed Power (Watts)
AC Mains| __
Stereo/Mono Mode
| Load (Ohms)| Maximum Average| FTC Continuous Average
0.1% THD+N
(See note 4)
0.1% THD+N
(See note 1)
| 0.1% THD+N
(See note 2)
| 0.05% THD+N
(See note 3)
1 kHz| 20Hz-20kHz| 1 kHz| 1 kHz| 20Hz-20kHz
120 VAC, 60 Hz Units| Stereo (both channels driven)|
4| 425| 410| 425| 370|
8| 300| 300| 300| 300| 250
Bridge- Mono
(balanced output)
| 8| 900| 815| 900| 800|
16| 645| 600| 640| 610| 515
__
Parallel- Mono
| 2| 905| | 900| 800|
4| 640| | 635| 615|
International Units| Stereo (both channels driven)| 4| 410| 375|
410| 380| 310
8| 300| 275| 300| 300| 260
Bridge- Mono
(balanced output)
| 8| 840| 760| 835| 775| 625
16| 605| 560| 600| 600| 530
__
Parallel- Mono
| 2| 835| | 830| 770|
4| 605| | 600| 600|
1400 CSL – Minimum Guaranteed Power (Watts)
AC Mains| __
Stereo/Mono Mode
| Load (Ohms)| Maximum Average| FTC Continuous Average
0.1% THD+N
(See note 4)
0.1% THD+N
(See note 1)
| 0.1% THD+N
(See note 2)
| 0.05% THD+N
(See note 3)
1 kHz| 20Hz-20kHz| 1 kHz| 1 kHz| 20Hz-20kHz
120 VAC, 60 Hz Units| Stereo (both channels driven)|
4| 700| 700| 700| |
8| 500| 500| 500| 500| 480
Bridge- Mono
(balanced output)
| 8| 1,500| 1,415| 1,500| |
16| 1,075| 1,030| 1,060| 1,040| 970
__
Parallel- Mono
| 2| 1,515| | 1,505| |
4| 1,050| | 1,050| 1,050|
International Units| Stereo (both channels driven)| 4| 665| 615|
645| 540| 470
8| 500| 480| 500| 500| 455
Bridge- Mono
(balanced output)
| 8| 1,320| 1,225| 1,300| 1,100| 1,070
16| 1,010| 965| 1,000| 1,010| 915
__
Parallel- Mono
| 2| 1,350| | 1,325| 1,100|
4| 1,000| | 1,000| 1,015|
Maximum Power Specifications
Crown’s maximum power specifications represent the largest amount of output
power you can expect from your amplifier when it is driven to full output
under the given conditions. These specifications can be used to prevent
loudspeaker and hearing damage.
The maximum power matrices include specifications for single cycle and 40
millisecond burst sine waves. Burst signals act like large transient peaks
that are present in common source signals. Loudspeakers can respond to a
single cycle burst, so the single cycle burst specifications should be used to
help you protect your loudspeakers. In contrast, a 40 millisecond burst
represents the typical response time of the human ear. Your ear will not
respond to the entire dynamic change of a burst that lasts less than 40
milliseconds.
Our maximum power specifications are referenced to a distortion level of
0.05%. The distortion reference for this measurement is not limited to THD,
but includes all types of distortion and noise. The distortion level of 0.05%
is used because this represents a low distortion condition. To help you
operate your amplifier within these tolerances, Crown’s premium amplifiers
include an input/output comparator that shows when the amplifier has exceeded
0.05% distortion. Operating the amplifier at distortion levels above 0.05% can
result in output power levels that are higher than those listed in the maximum
power matrices.
Maximum Power Notes
All maximum power specifications are based on 0.5% regulated AC mains with THD
of less than 1.0% and an ambient room temperature of 70° F (21° C).
International units with multi-tap transformers are specified for the best-
case transformer tap (normally 240 VAC, 60 Hz). Although it is an unusual
condition, your amplifier can function well with AC mains voltages up to 10%
over the specified line voltage. With overvoltage conditions, your amplifier
may be capable of delivering instantaneous power levels up to 20% greater than
the specifications in the matrix.
- A single cycle sine wave is presented to the amplifier and monitored for nonlinear distortion. The average power during the burst is reported. Loud- speakers must be able to withstand this level if they are to be safely used with this amplifier.
- A 40 millisecond sine wave burst (10 percent duty cycle) is presented to the amplifier and monitored for nonlinear distortion. The average power during the burst is reported. This power level is a measurement of the amplifier’s maximum transient power that can be perceived by the human ear.
460 CSL – Maximum Power (Watts)
AC Mains|
Stereo/Mono Mode
| Load (Ohms)| Single Cycle Tone Burst
0.05% Distortion + Noise (See note 1)
| 40 Millisecond Tone Burst
0.05% Distortion + Noise (See note 2)
50 Hz| 1 kHz| 7 kHz| 50 Hz| 1 kHz| 7 kHz
120 VAC, 6 0 Hz Units| Stereo (both channels
driven)| 4| 325| 335| 335| 315| 295| 310
8| 265| 310| 300| 230| 220| 230
Bridge- Mono
(balanced output)
| 8| 630| 640| 620| 600| 565| 580
16| 540| 630| 610| 470| 440| 455
Parallel- Mono
| 2| 635| 645| 640| 620| 580| 605
4| 530| 615| 600| 465| 430| 450
International Units| Stereo (both channels driven)| 4| 325| 330|
330| 320| 315| 330
8| 290| 345| 335| 260| 235| 250
Bridge- Mono
(balanced output)
| 8| 640| 650| 670| 635| 625| 655
16| 580| 690| 670| 520| 470| 495
Parallel- Mono
| 2| 620| 625| 625| 615| 615| 625
4| 580| 690| 670| 515| 475| 490
800 CSL – Maximum Power (Watts)
AC Mains| __
Stereo/Mono Mode
| Load (Ohms)| Single Cycle Tone Burst
0.05% Distortion + Noise (See note 1)
| 40 Millisecond Tone Burst
0.05% Distortion + Noise (See note 2)
50 Hz| 1 kHz| 7 kHz| 50 Hz| 1 kHz| 7 kHz
120 VAC, 6 0 Hz Units| Stereo (both channels
driven)| 4| 655| 805| 790| 550| 500| 520
8| 460| 525| 515| 400| 375| 395
Bridge- Mono
(balanced output)
| 8| 1,410| 1,850| 1,805| 1,190| 1,090| 1,125
16| 915| 1,060| 1,020| 795| 755| 780
__
Parallel- Mono
| 2| 1,440| 1,685| 1,645| 1,185| 1,085| 1,120
4| 915| 1,055| 1,020| 805| 750| 775
International Units| Stereo (both channels driven)| 4| 720| 900|
885| 605| 545| 565
8| 465| 530| 510| 410| 380| 395
Bridge- Mono
(balanced output)
| 8| 1,440| 1,770| 1,785| 1,200| 1,075| 1,120
16| 920| 1,055| 1,020| 820| 750| 785
__
Parallel- Mono
| 2| 1,390| 1,670| 1,655| 1,185| 1,065| 1,110
4| 915| 1,055| 1,015| 820| 750| 775
1400 CSL – Maximum Power (Watts)
AC Mains| __
Stereo/Mono Mode
| Load (Ohms)| Single Cycle Tone Burst
0.05% Distortion + Noise (See note 1)
| 40 Millisecond Tone Burst
0.05% Distortion + Noise (See note 2)
50 Hz| 1 kHz| 7 kHz| 50 Hz| 1 kHz| 7 kHz
120 VAC, 6 0 Hz Units| Stereo (both channels
driven)| 4| 1,090| 1,575| 1,525| 910| 815| 855
8| 715| 870| 835| 610| 570| 595
Bridge- Mono
(balanced output)
| 8| 2,155| 3,140| 3,040| 1,780| 1,615| 1,690
16| 1,415| 1,740| 1,675| 1,250| 1,135| 1,180
__
Parallel- Mono
| 2| 2,140| 3,135| 3,015| 1,790| 1,605| 1,680
4| 1,420| 1,735| 1,665| 1,225| 1,135| 1,170
International Units| Stereo (both channels driven)| 4| 1,190|
1,750| 1,695| 970| 870| 920
8| 785| 960| 920| 675| 625| 645
Bridge- Mono
(balanced output)
| 8| 2,355| 3,490| 3,380| 1,945| 1,725| 1,805
16| 1,540| 1,915| 1,840| 1,360| 1,235| 1,285
__
Parallel- Mono
| 2| 2,330| 3,485| 3,345| 1,940| 1,720| 1,800
4| 1,570| 1,895| 1,825| 1,360| 1,235| 1,270
Accessories
There are two accessories available at the time of this printing: the MT-XLR and the MT-BB. Important: The MTXLR and MT-BB must be installed at a Crown Factory Service Center or the Crown factory.
other. Because the MT-XLR connectors are in parallel with the amplifier’s built in phone connectors, an input signal fed to either input can be fed to another amplifier from the unused connector for that channel.
-
M T-XLR
The MT-XLR is an accessory panel that provides two standard 3-pin female XLR input connectors. The MT-XLR accessory makes it easy to quickly change connections in a system that uses standard XLR connectors. It can also be used in systems that need to daisy chain an input signal from one amplifier to an- -
M T-BB
The MT-BB is an accessory panel that provides barrier strip input connectors. An MT-BB accessory might be desirable in applications requiring bare wire connections. It can also be used to daisy chain an input signal from one amplifier to another just like the MT-XLR.
Service
This unit has very sophisticated circuitry which should only be serviced by a
fully trained technician. This is one reason why each unit bears the following
label:
CAUTION: To prevent electric shock, do not remove covers. No user
serviceable parts inside. Refer servicing to a qualified technician.
-
Worldwide Service
Service may be obtained from an authorized service center. (Contact your local Crown/Amcron representative or our office for a list of authorized service centers.) To obtain service, simply present the bill of sale as proof of purchase along with the defective unit to an authorized service center. They will handle the necessary paperwork and repair.
Remember to transport your unit in the original factory pack. -
North American Service
Service may be obtained in one of two ways: from an authorized service center or from the factory. You may choose either. It is important that you have your copy of the bill of sale as your proof of purchase.-
Service at a North American Service Center
This method usually saves the most time and effort. Simply present your bill of sale along with the defective unit to an authorized service center to obtain service. They will handle the necessary paperwork and repair. Remember to transport the unit in the original factory pack. A list of authorized service centers in your area can be obtained from our Technical Support Group. -
Factory Service
To obtain factory service, fill out the service information page that follows and send it along with your proof of purchase and the defective unit to the Crown factory. For warranty service, we will pay for ground shipping both ways in the United States after receiving copies of the shipping receipts. Shipments should be sent “UPS ground.” (If the unit is under warranty, you may send it C.O.D. for the cost of freight via UPS ground.) The factory will return it via UPS ground. Please contact us if other arrangements are required.
-
Factory Service Shipping Instructions
- When sending a Crown product to the factory for service, be sure to fill out the service information form that follows and enclose it inside your unit’s
Always use the original factory pack to transport the unit. shipping pack. Do not send the service information form separately. - To ensure the safe transportation of your unit to the factory, ship it in an original factory packing container. If you don’t have one, call or write Crown’s Parts Department. With the exception of polyurethane or wooden crates, any other packing material will not be sufficient to withstand the stress of shipping. Do not use loose, small size packing materials.
- Do not ship the unit in any kind of cabinet (wood or metal). Ignoring this warning may result in extensive damage to the unit and the cabinet. Accessories are not needed–do not send the instruction manual, cables and other hardware.
If you have any questions, please call or write the Crown Technical Support Group.
THREE YEAR FULL WARRANTY
SUMMARY OF WARRANTY
The Crown Audio Division of Crown International, Inc., 1718 West Mishawaka
Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you, the ORIGINAL
PURCHASER and ANY SUBSEQUENT OWNER of each NEW Crown1 product, for a period of
three (3) years from the date of purchase by the original purchaser (the
“warranty period”) that the new Crown product is free of defects in materials
and workmanship, and we further warrant the new Crown product regardless of
the reason for failure, except as excluded in this Crown Warranty.
1 Note: If your unit bears the name “Amcron,” please substitute it for the
name “Crown” in this warranty.
ITEMS EXCLUDED FROM THIS CROWN WARRANTY
This Crown Warranty is in effect only for failure of a new Crown product which
occurred within the Warranty Period. It does not cover any product which has
been damaged because of any intentional misuse, accident, negligence, or loss
which is covered under any of your insurance contracts. This Crown Warranty
also does not extend to the new Crown product if the serial number has been
defaced, altered, or removed.
WHAT THE WARRANTOR WILL DO
We will remedy any defect, regardless of the reason for failure (except as
excluded), by repair, replacement, or refund. We may not elect refund unless
you agree, or unless we are unable to provide replacement, and repair is not
practical or cannot be timely made. If a refund is elected, then you must make
the defective or malfunctioning product available to us free and clear of all
liens or other encumbrances. The refund will be equal to the actual purchase
price, not including interest, insurance, closing costs, and other finance
charges less a reasonable depreciation on the product from the date of
original purchase. Warranty work can only be performed at our authorized
service centers. We will remedy the defect and ship the product from the
service center within a reasonable time after receipt of the defective product
at our authorized service center.
HOW TO OBTAIN WARRANTY SERVICE
You must notify us of your need for warranty service not later than ninety
(90) days after expiration of the warranty period. All components must be
shipped in a factory pack. Corrective action will be taken within a reasonable
time of the date of receipt of the defective product by our authorized service
center. If the repairs made by our authorized service center are not
satisfactory, notify our authorized service center immediately.
DISCLAIMER OF CONSEQUENTIAL AND INCIDENTAL DAMAGES YOU ARE NOT ENTITLED TO
RECOVER FROM US ANY INCIDENTAL DAMAGES RESULTING FROM ANY DEFECT IN THE NEW
CROWN PRODUCT. THIS INCLUDES ANY DAMAGE TO ANOTHER PRODUCT OR PRODUCTS
RESULTING FROM SUCH A DEFECT.
WARRANTY ALTERATIONS
No person has the authority to enlarge, amend, or modify this Crown Warranty.
This Crown Warranty is not extended by the length of time which you are
deprived of the use of the new Crown product. Repairs and replacement parts
provided under the terms of this Crown Warranty shall carry only the unexpired
portion of this Crown Warranty.
DESIGN CHANGES
We reserve the right to change the design of any product from time to time
without notice and with no obligation to make corresponding changes in
products previously manufactured.
LEGAL REMEDIES OF PURCHASER
No action to enforce this Crown Warranty shall be commenced later than ninety
(90) days after expiration of the warranty period. THIS STATEMENT OF WARRANTY
SUPERSEDES ANY OTHERS CONTAINED IN THIS MANUAL FOR CROWN PRODUCTS.
NORTH AMERICA
SUMMARY OF WARRANTY
The Crown Audio Division of Crown International, Inc., 1718 West Mishawaka
Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you, the ORIGINAL
PURCHASER and ANY SUBSEQUENT OWNER of each NEW Crown product, for a period of
three (3) years from the date of purchase by the original purchaser (the
“warranty period”) that the new Crown product is free of defects in materials
and workmanship. We further warrant the new Crown product regardless of the
reason for failure, except as excluded in this Warranty.
ITEMS EXCLUDED FROM THIS CROWN WARRANTY
This Crown Warranty is in effect only for failure of a new Crown product which
occurred within the Warranty Period. It does not cover any product which has
been damaged because of any intentional misuse, accident, negligence, or loss
which is covered under any of your insurance contracts. This Crown Warranty
also does not extend to the new Crown product if the serial number has been
defaced, altered, or removed.
WHAT THE WARRANTOR WILL DO
We will remedy any defect, regardless of the reason for failure (except as
excluded), by repair, replacement, or refund. We may not elect refund unless
you agree, or unless we are unable to provide replacement, and repair is not
practical or cannot be timely made. If a refund is elected, then you must make
the defective or malfunctioning product available to us free and clear of all
liens or other encumbrances. The refund will be equal to the actual purchase
price, not including interest, insurance, closing costs, and other finance
charges less a reasonable depreciation on the product from the date of
original purchase. Warranty work can only be performed at our authorized
service centers or at the factory. We will remedy the defect and ship the
product from the service center or our factory within a reasonable time after
receipt of the defective product at our authorized service center or our
factory. All expenses in remedying the defect, including surface shipping
costs in the United States, will be borne by us.(You must bear the expense of
shipping the product between any foreign country and the port of entry in the
United States and all taxes, duties, and other customs fees for such foreign
shipments.)
HOW TO OBTAIN WARRANTY SERVICE
You must notify us of your need for warranty service not later than ninety
(90) days after expiration of the warranty period. All components must be
shipped in a factory pack, which, if needed, may be obtained from us free of
charge. Corrective action will be taken within a reasonable time of the date
of receipt of the defective product by us or our authorized service center. If
the repairs made by us or our authorized service center are not satisfactory,
notify us or our authorized service center immediately.
DISCLAIMER OF CONSEQUENTIAL AND INCIDENTAL DAMAGES YOU ARE NOT ENTITLED TO
RECOVER FROM US ANY INCIDENTAL DAMAGES RESULTING FROM ANY DEFECT IN THE NEW
CROWN PRODUCT. THIS INCLUDES ANY DAMAGE TO ANOTHER PRODUCT OR PRODUCTS
RESULTING FROM SUCH A DEFECT. SOME STATES DO NOT ALLOW THE EXCLUSION OR
LIMITATIONS OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR
EXCLUSION MAY NOT APPLY TO YOU.
WARRANTY ALTERATIONS
No person has the authority to enlarge, amend, or modify this Crown Warranty.
This Crown Warranty is not extended by the length of time which you are
deprived of the use of the new Crown product. Repairs and replacement parts
provided under the terms of this Crown Warranty shall carry only the unexpired
portion of this Crown Warranty.
DESIGN CHANGES
We reserve the right to change the design of any product from time to time
without notice and with no obligation to make corresponding changes in
products previously manufactured.
LEGAL REMEDIES OF PURCHASER
THIS CROWN WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, YOU MAY ALSO HAVE OTHER
RIGHTS WHICH VARY FROM STATE TO STATE. No action to enforce this Crown
Warranty shall be commenced later than ninety (90) days after expiration of
the warranty period. THIS STATEMENT OF WARRANTY SUPERSEDES ANY OTHERS
CONTAINED IN THIS MANUAL FOR CROWN PRODUCTS.
Telephone: 219-294-8200. Facsimile:
219-294-8301
Crown Audio Division
Technical Support / Factory Service Plant 2 SW, 1718 W. Mishawaka Rd.,
Elkhart, Indiana 46517 U.S.A.
Telephone: 219-294-8200,
800-342-6939 (North America, Puerto
Rico, and Virgin Islands only)
Facsimile: 219-294-8301 (Technical
Support) 219-294-8124 (Factory Service)
Fax Back: 219-293-9200 (North America
only) 800-294-4094 (North America only)
219-294-8100 (International)
Internet: http://www.crownintl.com
Crown Factory Service Information
Shipping Address: Crown Factory Service, Plant 2 SW, 1718 W. Mishawaka Rd.,
Elkhart, IN 46517
Phone: 1-800-342-6939 or
1-219-294-8200
Fax: 1-219-294-8124
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