Crown 1400 CSL User manual

POWER
OFF
OFF
POWER
UNBALANCED
INPUT WIRING
BALANCED
INPUT WIRING
REG. U.S. PAT. OFF.
3,808,545
4,330,809
4,611,180
+
–
TIP
RING
SLEEVE
GND
+
TIP
SLEEVE
GND
CAUTION: TURN OFF AMPLIFIER
BEFORE CHANGING THIS SWITCH!
STEREO
BRIDGE
MONO
PARALLEL
MONO
BRIDGE-MONO WIRING
TURN AMPLIFIER OFF.
SET STEREO/MONO
SWITCH TO
BRIDGE-MONO.
OUTPUT ACROSS
RED TERMINALS
ONLY. (CH-1
IS POSITIVE.)
PARALLEL-MONO WIRING
TURN AMPLIFIER OFF.
SET STEREO/MONO SWITCH
TO PARALLEL-MONO.
ADD JUMPER (14
GAGE OR LARGER)
ACROSS RED TERMINALS.
OUTPUT ACROSS CH-1
TERMINALS ONLY.
1
2
3
4
1
2
3
CH-2 CH-1
+
–
–
+
CH-2
(MONO)
INPUT
GAIN
CH-1
INPUT GAIN
CLASS 2
OUTPUT
WIRING
REQUIRED.
OUTPUTS
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.
ATTENTION: DÉBRANCHER AVANT
D'OUVRIR.
WARNING: TO
REDUCE THE RISK OF
FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE
THIS EQUIPMENT TO
RAIN OR MOISTURE.
MODEL 800–CSL
AC VOLTS 120
MAXIMUM OUTPUT: 230 WATTS
PER CHANNEL INTO 4 OHMS AT 1 KHz
WITH NO MORE THAN 0.1% THD
11.5 AMPS
60 Hz
®
INTERNATIONAL, INC.
ELECTRONIC EQUIPMENT
ELKHART,IN 46517
MADE IN U.S.A.
SERIAL NUMBER
0000
000000
CAUTION:
THIS COVER IS NECESSARY FOR
EFFICIENT COOLING OF THE AMPLIFIER.
REMOVE ONLY TO ACCESS GAIN SWITCH.
0
1
2
3456789
10
11
12 0
1
2
3456789
10
11
12
INPUT GROUND LIFT
(AFFECTS PHONE INPUTS ONLY.)
LIFT
Models: 460, 800, 1400 CSL®
Some models may be exported under the name Amcron .®
125168-1
8/97
© 1997 by Crown International, Inc., P.O. Box 1000, Elkhart, IN 46515-1000 U.S.A. Telephone: 219-294-
8000. Fax: [phone]. 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.
®
120 VAC North
American
Units Only:
Commercial
Audio
E106377
Approved for
THX®Theatre
Systems
CSL SERIES

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 prod-
uct, for a period of three (3) years from the date of purchase by the original
purchaser(the“warrantyperiod”)thatthenewCrownproductisfreeofdefects
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
beendamagedbecauseofanyintentionalmisuse,accident,negligence,orloss
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
thedefectiveormalfunctioning product availabletousfreeandclearof all liens
or other encumbrances. The refund will be equal to the actual purchase price,
notincluding interest, insurance, closingcosts, and other financecharges less
a reasonable depreciation on the product from the date of original purchase.
Warrantyworkcanonlybeperformedatourauthorizedservicecentersoratthe
factory.Wewillremedythedefectand 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,includingsurfaceshippingcostsintheUnitedStates,willbebornebyus.
(You must bear the expense of shipping the product between any foreign
countryandtheportofentryintheUnitedStatesandalltaxes,duties,andother
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)
daysafterexpirationofthewarrantyperiod.Allcomponentsmustbeshippedin
a factory pack, which, if needed, may be obtained from us free of charge.
Correctiveactionwill be taken within a reasonabletimeofthe date of receipt of
thedefectiveproductbyusorourauthorizedservicecenter.Iftherepairsmade
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
PRODUCTSRESULTINGFROMSUCHADEFECT.SOMESTATESDONOT
ALLOW THE EXCLUSION OR LIMITATIONS OF INCIDENTAL OR
CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR
EXCLUSION MAY NOT APPLY TO YOU.
WARRANTY ALTERATIONS
Nopersonhas theauthoritytoenlarge, amend,ormodifythis CrownWarranty.
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
providedundertheterms of thisCrownWarrantyshallcarryonly theunexpired
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
MAYALSOHAVEOTHERRIGHTSWHICHVARYFROMSTATETOSTATE.
NoactiontoenforcethisCrownWarrantyshallbecommencedlaterthanninety
(90) days after expiration of the warranty period.
THIS STATEMENT OF WARRANTY SUPERSEDES ANY OTHERS
CONTAINED IN THIS MANUAL FOR CROWN PRODUCTS.
9/90
WORLDWIDE
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,
theORIGINALPURCHASERandANYSUBSEQUENTOWNERofeach
NEW Crown1product, 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
furtherwarrantthenewCrownproductregardlessofthereasonforfailure,
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
whichoccurred within the Warranty Period.Itdoes 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
Wewillremedyanydefect,regardlessofthereasonforfailure(exceptas
excluded), by repair, replacement, or refund. We may not elect refund
unless you agree, or unless we are unable to provide replacement, and
repairisnotpracticalorcannotbetimelymade.Ifarefundiselected,then
youmustmakethedefectiveormalfunctioningproductavailabletousfree
and clear of all liens or other encumbrances. The refund will be equal to
theactualpurchaseprice,notincludinginterest,insurance,closingcosts,
andother finance charges lessa reasonable depreciation onthe product
fromthe date of originalpurchase. Warranty work canonly be performed
atour authorized service centers. Wewill remedy the defectand ship the
productfromtheservicecenterwithinareasonabletimeafterreceiptofthe
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)daysafterexpirationofthe 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
YOUARENOTENTITLEDTORECOVERFROMUSANYINCIDENTAL
DAMAGES RESULTING FROM ANY DEFECT IN THE NEW CROWN
PRODUCT.THISINCLUDESANYDAMAGETOANOTHERPRODUCT
OR PRODUCTS RESULTING FROM SUCH A DEFECT.
WARRANTY ALTERATIONS
No person has the authority to enlarge, amend, or modify this Crown
Warranty.ThisCrownWarrantyisnotextendedbythelengthoftimewhich
you are deprived of the use of the new Crown product. Repairs and
replacementpartsprovidedunderthetermsofthisCrownWarrantyshall
carry only the unexpired portion of this Crown Warranty.
DESIGN CHANGES
Wereservetherighttochangethedesignofanyproductfromtimetotime
without notice and with no obligation to make corresponding changes in
products previously manufactured.
LEGAL REMEDIES OF PURCHASER
Noactionto enforce this Crown Warranty shallbecommenced 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
Telephone: [phone]. Facsimile: 219-294-8301
Telephone: [phone]. Facsimile: 219-294-8301
THREE YEAR
FULL WARRANTY
YEAR
3
YEAR
3

Theinformation furnishedinthismanualdoesnotincludeallofthedetailsofdesign,production,or variations of the
equipment. Nor does it cover every possible situation which may arise during installation, operation or mainte-
nance. 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: [phone] (North America, Puerto Rico and Virgin Islands) or 219-294-8200
Fax: [phone] Fax Back (North America only): 800-294-4094 or 219-293-9200
Fax Back (International): 219-294-8100 Internet: http://www.crownintl.com
Printed on
recycled paper.
The lightning bolt
triangle is used to
alert the user to the
risk of electric shock.
The exclamation point
triangle is used to alert the
user to important operating
or maintenance instructions.
WARNING
TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE!
Magnetic Field
CAUTION! Donotlocatesensitivehigh-gainequip-
ment such as preamplifiers or tape decks directly
above or below the unit. Because thisamplifierhas
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 locat-
ing the amplifier(s) in the bottom of the rack and the
preamplifier or other sensitive equipment at the top.
C A U T I O N
RISK OF ELECTRIC SHOCK
DO NOT OPEN
TO PREVENT ELECTRIC SHOCK DO
NOT REMOVE TOP OR BOTTOM
COVERS. NO USER SERVICEABLE
PARTS INSIDE. REFER SERVICING
TO QUALIFIED SERVICE PERSON-
NEL. DISCONNECT POWER CORD
BEFORE REMOVING BACK PANEL
COVER TO ACCESS GAIN SWITCH.
A V I S
RISQUE DE CHOC ÉLECTRIQUE
N’OUVREZ PAS
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 ENARRIÈRE.

CSL Series Power Amplifiers
Page 4
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

CSL Series Power Amplifiers
Page 5
1.1 Unpacking
Please unpack and inspect your new amplifier for any
damage that may have occurred during transit. If dam-
age is found, notify the transportation company imme-
diately. Only you may initiate a claim with the carrier for
damage resulting during shipment. Even if the unit ar-
rived in perfect condition, as most do, save all packing
materialssoyouwillhavethemifyoueverneedtotrans-
port the unit. NEVER SHIP THE UNIT WITHOUT THE
FACTORY PACK.
1 Welcome
Congratulations on your purchase of a Crown® CSL
®
amplifier. CSL amplifiers arecompact,professionalste-
reo power amplifiers engineered to meet the most de-
manding sound reinforcement needs. They compare
very favorably to more expensive amplifiers, providing
uncolored sound and signal-to-noise ratios more com-
monly associated with recording studios.
This manual will help you successfully install and use
your amplifier—we strongly recommend you read all
instructions,warnings andcautions.Ifyou plantooper-
ate 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.
1.2 Features
❏Rugged,professional poweramplifiermounts ina stan-
dard 19 inch (48.3 cm) equipment rack.
❏Front panel power switch with turn-on delay for loud-
speaker protection.
❏Full, uncolored power with any reasonable load.
❏PatentedOutput DeviceEmulationProtection (
ODEP
®)
keeps the amplifier working when others would fail.
❏Highdamping factorprovidessuperior controloverlow-
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, mis-
matchedloads, overheating,DCinput/outputandhigh-
frequency overload; full internal fault protection.
❏Balanced phone jack inputs with internal three-posi-
tion sensitivity switch. Optional XLR or barrier block
input connectors are available with the
MT-XLR and
MT-BB accessories.
❏Groundlift switch helpsprevent “ground loops”by iso-
lating the chassis from the phone input grounds.
❏Efficient heat sinks and self-contained forced air cool-
ing 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.
OFF
POWER
Enable
Switch
Enable
Indicator
Removable Grille
and Dust Filter
Fig. 1.1 1400 CSL Front and Back Panels

CSL Series Power Amplifiers
Page 6
2 Installation
Always remove power from the unit and turn the level
controlsoffwhenmakingconnections .Thisreducesthe
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 sur-
face. IMPORTANT! Allow for adequate ventilation.
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 ad-
equate current. Voltages more than 10% over the
amplifier’s rated voltage may damage the ±15 volt regu-
Fig. 2.2 CSL Input Wiring
lator, filter capacitors and output transistors.
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 chan-
nel 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.
2.2 Mono
The monaural operating modes provide twice the
power to one channel as the Stereo mode. In Bridge-
Mono 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 im-
pedance greater than 4 ohms. Parallel-Mono mode
should be used with loads of 4 ohms or less.
B R I D G E - M O N O
1. Turn the level controls down (fully counterclockwise) and
turn off the amplifier.
2. Set the back panel stereo/mono switch to Bridge-Mono.
3. If present, remove the Parallel-Mono jumper.
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.
P A R A L L E L - M O N O
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 out-
put 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 re-
moved. Failure to do so will result in inefficient op-
AIR
FLOW
AIR FLOW
AMPLIFIER
(TOP VIEW)
RACK
CABINET
16 in
40.6 cm
2 in
MIN.
17 in
43.2 cm
AIR
FLOW
IMPORTANT: Be sure the back of
the amplifier is supported.
Fig. 2.1 Do NOT Block Air Flow
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 connec-
tion.
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 avail-
–
+
3
1
2
GND
FROM
PREAMPLIFIER
INPUT
BALANCED
+–
SHIELD
FROM
PREAMPLIFIER
INPUT
UNBALANCED
+
SHIELD
+
3
1
2
SHIELD

CSL Series Power Amplifiers
Page 7
Fig. 2.3 Three System Connection Methods

CSL Series Power Amplifiers
Page 8
eration, distortion and excessive heating.
2.3 Input Sensitivity Adjustment
The input sensitivity switch inside the amplifier is set to
0.775 voltsatthefactory.Itcanbechangedto 1.4 volts
or a voltage gain of 26 dB as follows:
1. Turn off and unplug the amplifier from the AC source.
2. Remove the access cover on the back panel.
3. Locate the labeled access hole for the sensitivity switch.
4. Set the switch to the desired position.
5. Replace the access cover plate.
When set to 26 dB gain, the 460CSL requires a 2.0 volt
input,the 800CSL requiresa2.5voltinputandthe 1400
CSL requires a 3.2voltinputtodeliver full outputintoan
8 ohm load.
2.4 Additional Load Protection
Because CSL amplifiers can generate enormous
power,itmaybedesirabletoprotectloudspeakersfrom
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 thepeak music powerforthe loudspeaker
(such as 75 watts). (B) Find the loudspeaker impedance (8
ohms). (C) Draw a line between points A and B. The line inter-
sects the middle scale at the correct fuse value (1.5 amps).
Fig. 2.4 Loudspeaker Fuse Nomograph
1.0
1.2
1.4
1.6
2.5
3
4
5
6
7
8
9
10
12
14
16
20
25
30
20
15
10
8
6
5
4
3
2
1.5
1
.8
.6
.5
.4
.3
.2
.15
.1
.08
3000
2000
1500
1000
800
600
400
300
200
150
100
80
60
40
30
20
15
10
8
6
4
3
2
1.5
1
SPEAKER Z
(ohms)
FUSE
(amps)
SPEAKER RATING
PEAK MUSIC POWER
(watts) (Typically 4 times the continuous average power)
Example: Z = 8 ohms.
Peak Power = 75 W
Answer: Fuse = 1.5 A
2
40

CSL Series Power Amplifiers
Page 9
3 Operation
3.1 Precautions
Althoughyouramplifierisprotectedfromexternalfaults,
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 in-
stalled between the red output posts. Be sure to
remove this jumper for Bridge-Mono or Stereo
mode, otherwise inefficient operation, high dis-
tortion and excessive heating will occur. Also,
check the stereo/mono switch for proper position.
4. Use care when making connections, selecting sig-
nal sources and controlling the output level.
5. Do not short the ground lead of an output cable to
theinputsignal ground.This mayformagroundloop
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 mak-
ingunauthorizedcircuit changes voids thewarranty.
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,andthelow voltagepowersupplyisworking.Itdoes
not show the status of the high voltage supplies.
3.3 Protection Systems
CSL amplifiers have extensive protection systems, in-
cluding ODEP , ultrasonic/RF protection, drive protec-
tion, 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 effi-
ciency of the output circuitry. To do this, Crown estab-
lished a rigorous program to measure the safe
operating area (SOA) of each output transistor. Then,
Crown designed intelligent circuitry to simulate instan-
taneous 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
thanthey candeliverwiththepresentconditions, ODEP
limits the drive until conditions fall within the SOA. Lim-
itingisproportional andkepttoan absoluteminimum—
only what is required to prevent output transistor
damage. Under normal conditions, no limiting is re-
quired and ODEP is transparent to the audio signal.
ODEP makes possible a quantum leap in output effi-
ciency 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 re-
produce.Thelimitingoccursfaraboveaudiblefrequen-
cies (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 undesir-
able frequencies to be reproduced.
3.3.3 Drive Protection
The drive protection system temporarily removes out-
put 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)
isdetectedin theamplifier’soutput,theunit will activate
its DC/low frequency protection circuitry which also
activatesdrive protectionmode.Thisprotectstheloads
and prevents oscillations. The unit resumes normal op-
eration as soon as dangerous output is no longer de-
tected.Althoughitisextremelyunlikelythatyouwillever
activate the DC/low frequency protection system, im-
proper source materials like subsonic square waves or
input overloads that excessively clip the input signal
can activate this system.
Theamplifier’sfaultprotectionsystemwill activatedrive
protection mode in rare situations where the output de-
vices see heavy common-mode current. The output
devices should never see heavy common-mode cur-
rent unless the circuitry is damaged. Activating drive
protection helps prevent further damage.
3.3.4 Transformer Thermal Protection
CSL amplifiers have transformer thermal protection.

CSL Series Power Amplifiers
Page 10
This protection circuitry is activated in unusual situa-
tions where the unit’s transformer temperature rises to
unsafe levels. Under these abnormal conditions, the
unitremovespowertothehighvoltagetransformer(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 de-
signed 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 invest-
ment—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 in-
credibly rare instance of a catastrophic amplifier fail-
ure. Other protection systems such as ODEP keep the
amplifier operational under most other severe condi-
tions. 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 pos-
sible when operating outside rated conditions , such as
driving a 1 ohm load or overloading the input and cre-
ating 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) un-
less something is wrong. In the rare event that an inter-
nal fuse blows, please refer the unit to a qualified
technician.Ifthebreakerina 1400CSL trips, try toiden-
tifyandcorrecttheproblembeforeresettingthebreaker
with the back panel reset switch. If the problem per-
sists, refer the unit to a qualified technician.
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 arealso located onthebackpanel.Besureto
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 in-
stalledinputaccessories.Theinputsensitivity 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).
3.5 Filter Cleaning
A dust filter is provided on the unit’s air intake. If it be-
comes 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 ampli-
fier will benefit from periodic cleaning by a qualified
technician. Internal cleaning information is available
from our Technical Support Group.
Fig. 3.1 Back Panel Level Controls
CHANNEL 2
LEVEL CONTROL CHANNEL 1 LEVEL CONTROL
CH-2
(MONO)
INPUT
CH-1
INPUT
GAIN
0
1
2
3456789
10
11
12 GAIN
0
1
2
3456789
10
11
12
INPUT GROUND LIFT
(AFFECTS PHONE INPUTS ONLY.)
LIFT

CSL Series Power Amplifiers
Page 11
Power
Output Power: The following specifications are guar-
anteed minimums for standard 1 kHz power from 120
VAC, 60 Hz North American units. For additional infor-
mation 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.
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 trans-
formers for 120 VAC, 60 Hz power mains.
International Units: refers to amplifiers with special multi-tap trans-
formers 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-NoiseRatio: A-weighted,betterthan105dB
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
from50 Hz to 2kHz, rising linearly togreaterthan 60dBat
20 kHz.
800 CSL : Greater than 90 dB below full bandwidth power
from50 Hz to 2kHz, rising linearly togreaterthan 66dBat
20 kHz.
1400CSL :Greaterthan 90dBbelow fullbandwidthpower
from50 Hz to 4kHz, rising linearly togreaterthan 70dBat
20 kHz.
Slew Rate: Greater than 13 volts per microsecond.
Voltage Gain: 20:1±3%or26 dB±0.25dBatthemaxi-
mum level setting.
460 CSL : 51:1 ±12% or 34.3 dB ±1 dB at 0.775 volt sensi-
tivity; 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 sensi-
tivity; 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 sen-
sitivity; 46:1 ±12% or 33.3 dB ±1 dB at 1.4 volt sensitivity.

CSL Series Power Amplifiers
Page 12
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:Aback panelrotarypotentiometerforeach chan-
nel used to control the output level.
Stereo/Mono: Athree-positionback 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
isolatethephone jack inputground fromthe AC ground.
Reset(
1400CSL only):Abackpanelpushbuttonusedto
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 ¼inch 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 bind-
ing 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 sup-
plies; excessive temperature, chain destruction phe-
nomena, 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 el-
evated temperature. A thermal switch imbedded in the
transformerprotectsthepowersuppliesfrom overload.
In the rare event that a transformer overheats, the ther-
mal switch removes power, waits until the unit has
cooled to a safe temperature and resets itself. Con-
trolled 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
Durableblack finish on steel chassis with special “flow-
through”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.
ApproximateWeight: Centerof gravityis6 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.

CSL Series Power Amplifiers
Page 13
Fig. 4.1 460 CSL Minimum Power Matrix
8
460 CSL –Minimum Guaranteed Power (Watts)
Stereo/Mono
Mode
Stereo
(both channels
driven)
Bridge-Mono
(balanced output)
Parallel-Mono
16
4
FTC Continuous Average
0.1% THD+N
(See note 4)
1 kHz 20Hz-20kHz
180
350
200
390
390
Maximum Average
Load (Ohms)
AC Mains120 VAC, 60 Hz Units
1 kHz
0.1% THD+N
(See note 1) 0.1% THD+N (See note 2)
240
200
455
395
455
400
20Hz-20kHz
185
370
4
2
8
8
16
4
175
350
200
390
390
230
205
465
410
440
410
185
375
0.05% THD+N
(See note 3)
1 kHz
235
200
455
390
445
395
225
200
455
405
430
405
4
2
8
International Units
Bridge-Mono
(balanced output)
Parallel-Mono
Stereo
(both channels
driven)
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 mea-
surement (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.

CSL Series Power Amplifiers
Page 14
Fig. 4.2 800 CSL Minimum Power Matrix
8
800 CSL –Minimum Guaranteed Power (Watts)
Stereo/Mono
Mode
Stereo
(both channels
driven)
Bridge-Mono
(balanced output)
Parallel-Mono
16
4
FTC Continuous Average
0.1% THD+N
(See note 4)
1 kHz 20Hz-20kHz
250
515
370
300
800
610
800
615
Maximum Average
Load (Ohms)
AC Mains120 VAC, 60 Hz Units
1 kHz
0.1% THD+N
(See note 1) 0.1% THD+N (See note 2)
425
300
900
645
905
640
20Hz-20kHz
410
300
815
600
4
2
8
8
16
4
310
260
625
530
380
300
775
600
770
600
410
300
840
605
835
605
375
275
760
560
0.05% THD+N
(See note 3)
1 kHz
425
300
900
640
900
635
410
300
835
600
830
600
4
2
8
International Units
Bridge-Mono
(balanced output)
Parallel-Mono
Stereo
(both channels
driven)
Fig. 4.3 1400 CSL Minimum Power Matrix
8
1400 CSL –Minimum Guaranteed Power (Watts)
Stereo/Mono
Mode
Stereo
(both channels
driven)
Bridge-Mono
(balanced output)
Parallel-Mono
16
4
FTC Continuous Average
0.1% THD+N
(See note 4)
1 kHz 20Hz-20kHz
480
970
500
1,040
1,050
Maximum Average
Load (Ohms)
AC Mains120 VAC, 60 Hz Units
1 kHz
0.1% THD+N
(See note 1) 0.1% THD+N (See note 2)
700
500
1,500
1,075
1,515
1,050
20Hz-20kHz
700
500
1,415
1,030
4
2
8
8
16
4
470
455
1,070
915
540
500
1,100
1,010
1,100
1,015
665
500
1,320
1,010
1,350
1,000
615
480
1,225
965
0.05% THD+N
(See note 3)
1 kHz
700
500
1,500
1,060
1,505
1,050
645
500
1,300
1,000
1,325
1,000
4
2
8
International Units
Bridge-Mono
(balanced output)
Parallel-Mono
Stereo
(both channels
driven)

CSL Series Power Amplifiers
Page 15
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 condi-
tion, 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. Loud-
speakers 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.
Fig. 4.4 460 CSL Maximum Power Matrix
8
460 CSL –Maximum Power (Watts)
Stereo/Mono
Mode
Bridge-Mono
(balanced output)
Parallel-Mono
16
4
Single Cycle Tone Burst
Load (Ohms)
AC Mains120 VAC, 6 0 Hz Units
0.05% Distortion + Noise
(See note 1)
50 Hz
325
265
630
540
635
530
4
2
8
8
16
4
325
290
640
580
620
580
1 kHz
335
310
640
630
645
615
330
345
650
690
625
690
7 kHz
335
300
620
610
640
600
330
335
670
670
625
670
4
2
8
International Units
Bridge-Mono
(balanced output)
Parallel-Mono
40 Millisecond Tone Burst
50 Hz
0.05% Distortion + Noise
(See note 2)
315
230
600
470
620
465
1 kHz
295
220
565
440
580
430
320
260
635
520
615
515
315
235
625
470
615
475
7 kHz
310
230
580
455
605
450
330
250
655
495
625
490
Stereo
(both channels
driven)
Stereo
(both channels
driven)

CSL Series Power Amplifiers
Page 16
Fig. 4.5 800 CSL Maximum Power Matrix
Fig. 4.6 1400 CSL Maximum Power Matrix
8
800 CSL –Maximum Power (Watts)
Stereo/Mono
Mode
Bridge-Mono
(balanced output)
Parallel-Mono
16
4
Single Cycle Tone Burst
Load (Ohms)
AC Mains120 VAC, 6 0 Hz Units
0.05% Distortion + Noise
(See note 1)
50 Hz
655
460
1,410
915
1,440
915
4
2
8
8
16
4
720
465
1,440
920
1,390
915
1 kHz
805
525
1,850
1,060
1,685
1,055
900
530
1,770
1,055
1,670
1,055
7 kHz
790
515
1,805
1,020
1,645
1,020
885
510
1,785
1,020
1,655
1,015
4
2
8
International Units
Bridge-Mono
(balanced output)
Parallel-Mono
40 Millisecond Tone Burst
50 Hz
0.05% Distortion + Noise
(See note 2)
550
400
1,190
795
1,185
805
1 kHz
500
375
1,090
755
1,085
750
605
410
1,200
820
1,185
820
545
380
1,075
750
1,065
750
7 kHz
520
395
1,125
780
1,120
775
565
395
1,120
785
1,110
775
Stereo
(both channels
driven)
Stereo
(both channels
driven)
8
1400 CSL –Maximum Power (Watts)
Stereo/Mono
Mode
Bridge-Mono
(balanced output)
Parallel-Mono
16
4
Single Cycle Tone Burst
Load (Ohms)
AC Mains120 VAC, 6 0 Hz Units
0.05% Distortion + Noise
(See note 1)
50 Hz
1,090
715
2,155
1,415
2,140
1,420
4
2
8
8
16
4
1,190
785
2,355
1,540
2,330
1,570
1 kHz
1,575
870
3,140
1,740
3,135
1,735
1,750
960
3,490
1,915
3,485
1,895
7 kHz
1,525
835
3,040
1,675
3,015
1,665
1,695
920
3,380
1,840
3,345
1,825
4
2
8
International Units
Bridge-Mono
(balanced output)
Parallel-Mono
40 Millisecond Tone Burst
50 Hz
0.05% Distortion + Noise
(See note 2)
910
610
1,780
1,250
1,790
1,225
1 kHz
815
570
1,615
1,135
1,605
1,135
970
675
1,945
1,360
1,940
1,360
870
625
1,725
1,235
1,720
1,235
7 kHz
855
595
1,690
1,180
1,680
1,170
920
645
1,805
1,285
1,800
1,270
Stereo
(both channels
driven)
Stereo
(both channels
driven)

CSL Series Power Amplifiers
Page 17
5 Accessories
There are two accessories available at the time of this
printing:the MT-XLR and the MT-BB .Important:The MT-
XLR and MT-BB must be installed at a Crown Factory
Service Center or the Crown factory.
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 con-
nectors. It can also be used in systems that need to
daisy chain an input signal from one amplifier to an-
other. Because the MT-XLR connectors are in parallel
with the amplifier’s built in phone connectors, an input
signalfedtoeither input can be fed to another amplifier
from the unused connector for that channel.
5.2 MT-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 connec-
tions. It can also be used to daisy chain an input signal
from one amplifier to another just like the MT-XLR .
MT-BB –+–+
CH-2 INPUT CH-1 INPUT
Fig. 5.2 The MT-BB
MT-XLR
CH-2 INPUT CH-1 INPUT
PUSHPUSH
3
12
GND
THESE XLR INPUTS ARE CONNECTED IN PARALLEL WITH THE PHONE JACK INPUTS.
Fig. 5.1 The MT-XLR

CSL Series Power Amplifiers
Page 18
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 preventelectric shock,donot remove
covers. No user serviceable parts inside. Refer ser-
vicing to a qualified technician.
6.1 Worldwide Service
Service may be obtained from an authorized service
center. (Contact your local Crown/Amcron representa-
tiveor our officeforalistofauthorized servicecenters.)
Toobtainservice,simplypresentthe billofsaleasproof
of purchase along with the defective unit to an autho-
rized 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
chooseeither. 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 informa-
tion page that follows and send it along with your proof
ofpurchase andthedefectiveunitto 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 fac-
tory will return it via UPS ground. Please contact us if
other arrangements are required.
shipping pack. Do not send the service informa-
tion 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 pack-
ing material will not be sufficient to withstand the
stress ofshipping. 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 ex-
tensive damage to the unit and the cabinet. Ac-
cessories are not needed—do not send the
instruction manual, cables and other hardware.
Ifyouhaveany questions,please callorwritetheCrown
Technical Support Group.
Always use the
original factory pack
to transport the unit.
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
Crown Audio Division
Technical Support / Factory Service
Plant 2 SW, 1718 W. Mishawaka Rd., Elkhart,
Indiana 46517 U.S.A.
Telephone: [phone]
800-342-6939 (North America,
PuertoRico, andVirgin Islandsonly)
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
Page 19
Crown Factory Service Information
Shipping Address: Crown Factory Service, Plant 2 SW, 1718 W. Mishawaka Rd., Elkhart, IN 46517
Phone: [phone] or 1-219-294-8200 Fax: [phone]
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.)
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
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.
Detach and send with unit.