CSL SERIES
POWER
OFF
POWER
OFF
MODEL 800–CSL
11.5 AMPS
AC VOLTS 120
60 Hz
MAXIMUM OUTPUT: 230 WATTS
PER CHANNEL INTO 4 OHMS AT 1 KHz
WITH NO MORE THAN 0.1% THD
®
INTERNATIONAL, INC.
ELECTRONIC EQUIPMENT
ELKHART, IN 46517
MADE IN U.S.A.
SERIAL NUMBER
CAUTION: TO PREVENT ELECTRIC
SHOCK DO NOT REMOVE TOP OR BOTTOM
COVERS. NO USER SERVICEABLE PARTS
INSIDE. REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL. DISCONNECT POWER
CORD BEFORE REMOVING REAR P.I.P.
MODULE TO ACCESS SENSITIVITY SWITCH.
OUTPUTS
CAUTION:
THIS COVER IS NECESSARY FOR
EFFICIENT COOLING OF THE AMPLIFIER.
REMOVE ONLY TO ACCESS GAIN SWITCH.
CLASS 2
OUTPUT
WIRING
REQUIRED.
ATTENTION:
BRIDGE-MONO WIRING
CH-2
WARNING:
TO
REDUCE THE RISK OF
FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE
THIS EQUIPMENT TO
RAIN OR MOISTURE.
DÉBRANCHER AVANT
D'OUVRIR.
CH-2
0000
CH-1
000000
5
REG. U.S. PAT. OFF.
3,808,545
4,330,809
4,611,180
6
BALANCED
INPUT WIRING
+
CAUTION: TURN OFF AMPLIFIER
BEFORE CHANGING THIS SWITCH!
–
GND
TIP
RING
SLEEVE
5
10
1
0
12
GAIN
INPUT
LIFT
(AFFECTS PHONE INPUTS ONLY.)
9
10
1
INPUT
(MONO)
SWITCH TO
BRIDGE-MONO.
8
2
INPUT GROUND LIFT
11
11
0
UNBALANCED
INPUT WIRING
12
GAIN
PARALLEL-MONO WIRING
–
1 TURN AMPLIFIER OFF.
2 SET STEREO/MONO
7
3
9
2
6
4
8
3
BRIDGE
MONO
1 TURN AMPLIFIER OFF.
7
4
STEREO
PARALLEL
MONO
CH-1
+
GND
TIP
+
2 SET STEREO/MONO SWITCH
TO PARALLEL-MONO.
+
3 ADD JUMPER (14
3 OUTPUT ACROSS
–
GAGE OR LARGER)
ACROSS RED TERMINALS.
RED TERMINALS
ONLY. (CH-1
IS POSITIVE.)
4 OUTPUT ACROSS CH-1
TERMINALS ONLY.
SLEEVE
Models: 460, 800, 1400 CSL
®
Some models may be exported under the name Amcron.®
© 1997 by Crown International, Inc., P.O. Box 1000, Elkhart, IN 46515-1000 U.S.A. Telephone: 219-2948000. Fax: 219-294-8329. CSL series amplifiers are produced by the Professional Audio Division of Crown
International, Inc. Trademark Notice: Amcron,® Crown,® CSL®, and ODEP ® are registered trademarks of
Crown International, Inc. Other trademarks are the property of their respective owners.
Approved for
THX® Theatre
Systems
120 VAC North
American
Units Only:
®
Commercial
Audio
E106377
125168-1
8/97
3
YEAR
THREE YEAR
FULL WARRANTY
3
YEAR
WORLDWIDE
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 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.
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.
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.
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.
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. 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.
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.
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
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.
9/90
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
Telephone: 219-294-8200. Facsimile: 219-294-8301
9/90
The information furnished in this manual does not include all of the details of design, production, or variations of the
equipment. Nor does it cover every possible situation which may arise during installation, operation or maintenance. If your unit bears the name “Amcron,” please substitute it for the name “Crown” in this manual. If you need
special assistance beyond the scope of this manual, please contact our Technical Support Group.
Crown Audio Division Technical Support Group
Plant 2 SW, 1718 W. Mishawaka Rd., Elkhart, Indiana 46517 U.S.A.
Phone: 800-342-6939 (North America, Puerto Rico and Virgin Islands) or 219-294-8200
Fax: 219-294-8301 Fax Back (North America only): 800-294-4094 or 219-293-9200
Fax Back (International): 219-294-8100 Internet: http://www.crownintl.com
CAUTION
AVIS
RISK OF ELECTRIC SHOCK
DO NOT OPEN
RISQUE DE CHOC ÉLECTRIQUE
N’OUVREZ PAS
TO PREVENT ELECTRIC SHOCK DO
NOT REMOVE TOP OR BOTTOM
COVERS. NO USER SERVICEABLE
PARTS INSIDE. REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL. DISCONNECT POWER CORD
BEFORE REMOVING BACK PANEL
COVER TO ACCESS GAIN SWITCH.
À PRÉVENIR LE CHOC ÉLECTRIQUE
N’ENLEVEZ PAS LES COUVERCLES. IL
N’Y A PAS DES PARTIES SERVICEABLE
À L’INTÉRIEUR. TOUS REPARATIONS
DOIT ETRE FAIRE PAR PERSONNEL
QUALIFIÉ SEULMENT. DÉBRANCHER
LA BORNE AVANT D’ENLEVER LA
COVERTURE EN ARRIÈRE.
Magnetic Field
WARNING
TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE!
The lightning bolt
triangle is used to
alert the user to the
risk of electric shock.
CAUTION! Do not locate sensitive high-gain equipment such as preamplifiers or tape decks directly
above or below the unit. Because this amplifier has
a high power density, it has a strong magnetic field
which can induce hum into unshielded devices that
are located nearby. The field is strongest just above
and below the unit.
If an equipment rack is used, we recommend locating the amplifier(s) in the bottom of the rack and the
preamplifier or other sensitive equipment at the top.
The exclamation point
triangle is used to alert the
user to important operating
or maintenance instructions.
Printed on
recycled paper.
CSL Series Power Amplifiers
CONTENTS
1 Welcome ....................................................................... 5
1.1 Unpacking ............................................................. 5
1.2 Features ................................................................ 5
2 Installation .................................................................... 6
2.1 Stereo .................................................................... 6
2.2 Mono ..................................................................... 6
2.3 Input Sensitivity Adjustment ................................... 8
2.4 Additional Load Protection ..................................... 8
3 Operation ..................................................................... 9
3.1 Precautions ............................................................ 9
3.2 Indicators .............................................................. 9
3.3 Protection Systems ................................................ 9
3.3.1 ODEP .......................................................... 9
3.3.2 Ultrasonic and RF Protection ....................... 9
3.3.3 Drive Protection ........................................... 9
3.3.4 Transformer Thermal Protection ................... 9
3.3.5 Fuses and Circuit Breakers ........................ 10
3.4 Controls ............................................................... 10
3.5 Filter Cleaning ...................................................... 10
4 Specifications ............................................................ 11
5 Accessories ............................................................... 17
5.1 MT-XLR ................................................................ 17
5.2 MT-BB .................................................................. 17
6 Service ....................................................................... 18
6.1 Worldwide Service ............................................... 18
6.2 North American Service ....................................... 18
6.2.1 Service at a N. American Service Center ... 18
6.2.2 Factory Service ......................................... 18
Page 4
CSL Series Power Amplifiers
POWER
OFF
Removable Grille
and Dust Filter
Enable Enable
Indicator Switch
Fig. 1.1 1400 CSL Front and Back Panels
1 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.
1.1 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.
1.2 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 lowfrequency 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 highfrequency 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.
Page 5
CSL Series Power Amplifiers
2 Installation
lator, filter capacitors and output transistors.
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:
1. 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.
2.1 Stereo
1. Turn the level controls down (fully counterclockwise) and
turn off the amplifier.
2. Set the back panel stereo/mono switch to Stereo.
3. If present, remove the Parallel-Mono jumper.
4. Connect the input and output cables as shown in the first
example in Figure 2.3.
5. 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.
17 in
43.2 cm
IMPORTANT: Be sure the back of
the amplifier is supported.
2.2 Mono
AIR
FLOW
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.
AIR
FLOW
16 in
40.6 cm
AMPLIFIER
(TOP VIEW)
2 in
MIN.
RACK
CABINET
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
AIR FLOW
Fig. 2.1 Do NOT Block Air Flow
1. Turn the level controls down (fully counterclockwise) and
turn off the amplifier.
2. 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.
2. Set the back panel stereo/mono switch to Bridge-Mono.
3. 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 availBALANCED
GND
1
1
–
+
3
2
+
+
INPUT
FROM
PREAMPLIFIER
+
–
SHIELD
SHIELD
Fig. 2.2 CSL Input Wiring
able with the MT-XLR accessory. See Section 5.)
4. 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 regu-
Page 6
4. Connect the input and output cables as shown in the
second example in Figure 2.3. Use the Ch.1 input only.
5. Make sure the load is balanced (neither side shorted to
ground) and do not use the black (–) banana jacks.
6. Turn on the amplifier and adjust the level. Use the Ch.1
level control only.
PARALLEL-MONO
SHIELD
3
2
FROM
PREAMPLIFIER
INPUT
UNBALANCED
3. If present, remove the Parallel-Mono jumper.
1. Turn down the level controls (fully counterclockwise) and
turn off the amplifier.
2. Set the back panel stereo/mono switch to Parallel-Mono.
3. Install a solid jumper (at least 14 gauge) across the output between the two red (+) banana jacks.
4. Connect the input and output cables as shown in the
third example in Figure 2.3. Use the Ch.1 input only.
5. 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 op-
CSL Series Power Amplifiers
Fig. 2.3 Three System Connection Methods
Page 7
CSL Series Power Amplifiers
eration, distortion and excessive heating.
1.0
2.3 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:
1.2
1.4
1.6
20
2
3000
15
2000
2.5
10
1. Turn off and unplug the amplifier from the AC source.
1500
8
3
1000
2. Remove the access cover on the back panel.
800
6
400
4
5
300
3
5. 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.
200
6
150
2
7
Example: Z = 8 ohms.
Peak Power = 75 W
100
80
1.5
60
8
9
Answer: Fuse = 1.5 A
1
40
.8
10
30
.6
12
20
.5
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).
Page 8
.4
10
.3
20
25
.2
SPEAKER RATING
16
FUSE
(amps)
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.
15
14
SPEAKER Z
(ohms)
2.4 Additional Load Protection
8
6
4
3
.15
2
30
.1
.08
(Typically 4 times the continuous average power)
4. Set the switch to the desired position.
600
5
4
1.5
1
40
Fig. 2.4 Loudspeaker Fuse Nomograph
PEAK MUSIC POWER
(watts)
3. Locate the labeled access hole for the sensitivity switch.
CSL Series Power Amplifiers
3 Operation
3.1 Precautions
Although your amplifier is protected from external faults,
the following safety precautions are recommended:
1. There are important differences among the Stereo,
Bridge-Mono and Parallel-Mono operating modes.
Refer to Sections 2.1 and 2.2.
2. WARNING: Do not change the stereo/mono
switch unless the amplifier is first turned off.
3. 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.
4. Use care when making connections, selecting signal sources and controlling the output level.
5. Do not short the ground lead of an output cable to
the input signal ground. This may form a ground loop
and cause oscillations.
6. 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.
7. Never connect the output to a power supply output,
battery or power main.
8. 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.
3.2 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.
3.3 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.
3.3.1 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.
3.3.2 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.
3.3.3 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.
3.3.4 Transformer Thermal Protection
CSL amplifiers have transformer thermal protection.
Page 9
CSL Series Power Amplifiers
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.
3.3.5 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.
Page 10
3.4 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).
CHANNEL 2
LEVEL CONTROL
CHANNEL 1
LEVEL CONTROL
CH-2
5
6
CH-1
7
4
5
9
3
2
10
2
1
INPUT GROUND LIFT
11
0
12
GAIN
6
7
4
8
3
LIFT
INPUT
(AFFECTS PHONE INPUTS ONLY.)
8
9
10
1
INPUT
(MONO)
11
0
12
GAIN
Fig. 3.1 Back Panel Level Controls
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.
CSL Series Power Amplifiers
4 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.
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: 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.
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: 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.
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: 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.
1400 CSL: 100 and 120 VAC units draw up to 15 amps
of current; 220 and 240 VAC units draw up to 7 amps.
Page 11
CSL Series Power Amplifiers
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 fanformer
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
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.
Input Connector: Two balanced ¼ inch phone jacks.
See Section 5 for XLR and barrier block accessories.
Approximate Weight: Center of gravity is 6 inches (15.2
cm) behind front mounting surface.
Input Impedance: Nominally 20 K ohms, balanced;
10 K ohms, unbalanced.
120 VAC, 60 Hz Units:
460 CSL: 30 pounds (13.6 kg) net; 34 pounds
(15.4 kg) shipping weight.
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.
Page 12
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.
CSL Series Power Amplifiers
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.
1. 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.
2. 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.
3. 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.
4. 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.
FTC Continuous Average
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
4
240
Stereo/Mono
Mode
Stereo
(both channels
driven)
8
200
Bridge-Mono
185
200
8
455
395
2
455
445
4
400
395
225
Parallel-Mono
1 kHz
20Hz-20kHz
200
180
390
350
455
370
390
4
230
(both channels
driven)
8
205
Bridge-Mono
8
465
(balanced output) 16
410
2
440
430
4
410
405
Parallel-Mono
0.1% THD+N
(See note 4)
235
(balanced output) 16
Stereo
International Units
Maximum Average
Load (Ohms)
120 VAC, 60 Hz Units
AC Mains
460 CSL – Minimum Guaranteed Power (Watts)
185
200
390
200
175
390
350
455
375
405
390
Fig. 4.1 460 CSL Minimum Power Matrix
Page 13
CSL Series Power Amplifiers
International Units
Maximum Average
FTC Continuous Average
Load (Ohms)
120 VAC, 60 Hz Units
AC Mains
800 CSL – Minimum Guaranteed Power (Watts)
0.1% THD+N
(See note 1)
Stereo
4
425
410
425
370
(both channels
driven)
8
300
300
300
300
Bridge-Mono
Stereo/Mono
Mode
0.1% THD+N
(See note 2)
0.05% THD+N
(See note 3)
0.1% THD+N
(See note 4)
1 kHz
20Hz-20kHz
1 kHz
1 kHz
8
900
815
900
800
(balanced output) 16
645
600
640
610
2
905
900
800
4
640
635
615
Parallel-Mono
20Hz-20kHz
250
515
Stereo
4
410
375
410
380
310
(both channels
driven)
8
300
275
300
300
260
Bridge-Mono
8
840
760
835
775
625
(balanced output) 16
605
560
600
600
530
2
835
830
770
4
605
600
600
Parallel-Mono
Fig. 4.2 800 CSL Minimum Power Matrix
International Units
Maximum Average
FTC Continuous Average
Load (Ohms)
120 VAC, 60 Hz Units
AC Mains
1400 CSL – Minimum Guaranteed Power (Watts)
0.1% THD+N
(See note 1)
Stereo
4
700
700
700
(both channels
driven)
8
500
500
500
Bridge-Mono
Stereo/Mono
Mode
0.1% THD+N
(See note 2)
0.05% THD+N
(See note 3)
1 kHz
20Hz-20kHz
1 kHz
0.1% THD+N
(See note 4)
1 kHz
20Hz-20kHz
500
480
1,040
970
8
1,500
1,415
1,500
(balanced output) 16
1,075
1,030
1,060
2
1,515
1,505
4
1,050
1,050
1,050
Parallel-Mono
Stereo
4
665
615
645
540
470
(both channels
driven)
8
500
480
500
500
455
Bridge-Mono
8
1,320
1,225
1,300
1,100
1,070
(balanced output) 16
1,010
965
1,000
1,010
915
2
1,350
1,325
1,100
4
1,000
1,000
1,015
Parallel-Mono
Fig. 4.3 1400 CSL Minimum Power Matrix
Page 14
CSL Series Power Amplifiers
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.
1. A single cycle sine wave is presented to the amplifier and monitored for nonlinear distortion. The average power during the burst is reported. Loudspeakers must be able to withstand this level if they are to be safely used with this amplifier.
2. 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.
International Units
120 VAC, 6 0 Hz Units
Stereo/Mono
Mode
Stereo
(both channels
driven)
Bridge-Mono
Load (Ohms)
AC Mains
460 CSL – Maximum Power (Watts)
Single Cycle Tone Burst
40 Millisecond Tone Burst
0.05% Distortion + Noise
(See note 1)
0.05% Distortion + Noise
(See note 2)
50 Hz
1 kHz
7 kHz
50 Hz
1 kHz
7 kHz
4
325
335
335
315
295
310
8
265
310
300
230
220
230
8
630
640
620
600
565
580
(balanced output) 16
540
630
610
470
440
455
2
635
645
640
620
580
605
4
530
615
600
465
430
450
Parallel-Mono
Stereo
4
325
330
330
320
315
330
(both channels
driven)
8
290
345
335
260
235
250
Bridge-Mono
8
640
650
670
635
625
655
(balanced output) 16
580
690
670
520
470
495
2
620
625
625
615
615
625
4
580
690
670
515
475
490
Parallel-Mono
Fig. 4.4 460 CSL Maximum Power Matrix
Page 15
CSL Series Power Amplifiers
International Units
120 VAC, 6 0 Hz Units
Stereo/Mono
Mode
Stereo
Load (Ohms)
AC Mains
800 CSL – Maximum Power (Watts)
4
Single Cycle Tone Burst
40 Millisecond Tone Burst
0.05% Distortion + Noise
(See note 1)
0.05% Distortion + Noise
(See note 2)
50 Hz
1 kHz
7 kHz
50 Hz
1 kHz
7 kHz
655
805
790
550
500
520
(both channels
driven)
8
460
525
515
400
375
395
Bridge-Mono
8
1,410
1,850
1,805
1,190
1,090
1,125
915
1,060
1,020
795
755
780
1,440
1,685
1,645
1,185
1,085
1,120
(balanced output) 16
Parallel-Mono
2
4
915
1,055
1,020
805
750
775
Stereo
4
720
900
885
605
545
565
(both channels
driven)
8
465
530
510
410
380
395
Bridge-Mono
8
1,440
1,770
1,785
1,200
1,075
1,120
(balanced output) 16
Parallel-Mono
920
1,055
1,020
820
750
785
2
1,390
1,670
1,655
1,185
1,065
1,110
4
915
1,055
1,015
820
750
775
Fig. 4.5 800 CSL Maximum Power Matrix
International Units
120 VAC, 6 0 Hz Units
Stereo/Mono
Mode
Load (Ohms)
AC Mains
1400 CSL – Maximum Power (Watts)
Single Cycle Tone Burst
40 Millisecond Tone Burst
0.05% Distortion + Noise
(See note 1)
0.05% Distortion + Noise
(See note 2)
50 Hz
1 kHz
7 kHz
50 Hz
1 kHz
7 kHz
Stereo
4
1,090
1,575
1,525
910
815
855
(both channels
driven)
8
715
870
835
610
570
595
Bridge-Mono
8
2,155
3,140
3,040
1,780
1,615
1,690
(balanced output) 16
1,415
1,740
1,675
1,250
1,135
1,180
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
Parallel-Mono
Stereo
4
1,190
1,750
1,695
970
870
920
(both channels
driven)
8
785
960
920
675
625
645
Bridge-Mono
8
2,355
3,490
3,380
1,945
1,725
1,805
(balanced output) 16
1,540
1,915
1,840
1,360
1,235
1,285
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
Parallel-Mono
Fig. 4.6 1400 CSL Maximum Power Matrix
Page 16
CSL Series Power Amplifiers
5 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.
5.1 MT-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 anCH-2 INPUT
PUSH
Fig. 5.1 The MT-XLR
CH-2 INPUT
CH-1 INPUT
–
–
+
+
3
GND
THESE XLR INPUTS ARE CONNECTED IN PARALLEL WITH THE PHONE JACK INPUTS.
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.
MT-BB
CH-1 INPUT
PUSH
MT-XLR
5.2 MT-BB
1
2
Fig. 5.2 The MT-BB
Page 17
CSL Series Power Amplifiers
6 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.
Factory Service Shipping Instructions:
1. 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.
6.1 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.
6.2 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.
6.2.1 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.
6.2.2 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.
Page 18
shipping pack. Do not send the service information form separately.
2. 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.
3. 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.
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
CSL Series Power Amplifiers
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
Owner’s Name: _________________________________________________________________________
Shipping Address: ______________________________________________________________________
Phone Number: _____________________________
Fax Number: _____________________________
Model: ________________________ Serial Number: ______________ Purchase Date: ___________
NATURE OF PROBLEM
(Be sure to describe the conditions that existed when the problem occurred and what attempts were made to correct it.)
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
Detach and send with unit.
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
Other equipment in your system: __________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
If warranty has expired, payment will be: ❑ Cash/Check
❑ VISA
❑ MasterCard
❑ C.O.D.
Card Number:___________________________ Exp. Date:_______ Signature:_____________________________
ENCLOSE THIS PORTION WITH THE UNIT. DO NOT MAIL SEPARATELY.
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