Crown CL1 User manual

8 ohm Stereo (per channel)
1 kHz
Power
275W
450W
560W
900W
1,100W
4 ohm Bridge-Mono
8 ohm Bridge-Mono
2 ohm Stereo (per channel)
4 ohm Stereo (per channel)
CL1
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.5% THD.
*
8 ohm Stereo (per channel)
1 kHz
Power
400W
660W
975W
1,320W
1,950W
4 ohm Bridge-Mono
8 ohm Bridge-Mono
2 ohm Stereo (per channel)
4 ohm Stereo (per channel)
CL2
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.5% THD.
*
CONTRACTOR SERIES
Looking for a quality, constant voltage and low
impedance two channel amplifier for your res-
taurant, nightclub, retail store, school or house
of worship projects? The Crown®“Contractor Series”
amplifiers are designed just for you.
CL Series amplifiers provide 2, 4 and 8 ohm options
per channel for applications where high power, low
impedance loads are the primary requirement.
All Contractor Series amplifiers feature Crown’s
exclusive SST (System Solutions Topologies) expan-
sion system. The SST expansion system makes it
easy to tailor your amplifier to a specific application
or to add future technology as it develops.
With an incredibly wide range of power and fea-
ture/benefits, Contractor Series amplifiers give the
professional sound contractor more options. Crown
quality is available at the best dollar-per-watt ratio on
the market.
For more details about the Crown Contractor Series,
contact the Crown Technical Support Group at 800-
342-6939 or 574-294-8200. Also, visit the Crown
Audio website at www.crownaudio.com.
Specifications
Note: All measurements apply to amplifiers in stereo
mode with 8-ohm loads and an input sensitivity
of 26-dB gain, 1-kHz at rated power unless other
otherwise specified. Specifications for units supplied
outside the U.S.A. may vary slightly at different AC
voltages and frequencies.
Power
Output Power: See power charts below.
Load Impedance:
Safe with all types of loads.
2, 4 and 8 ohm Stereo.
4, 8 and 16 ohm Bridge.
Voltage Gain, 1 kHz, 1.4V sensitivity:
30.5 dB (CL1), 32.1 dB (CL2), or 34 dB (CL4) into
8 ohms.
AC Line Requirements:
Note: North American units are 60 Hz only. All other
models are 50/60 Hz. Voltages are ±10%.
AC Line Current:
100V: 7.6A (CL1), 11.4A (CL2), or 8.5A (CL4).
120V: 6.3A (CL1), 9.5A (CL2), or 7.1A (CL4).
230-240V: 3.5A (CL1), 5.0A (CL2), or 3.7A (CL4).
AC Line Connector: Detachable 15A IEC connector
with country-specific plug.
Performance
Frequency Response, 20 Hz to 20 kHz at 1 watt:
±0.1 dB (CL1, CL2) or ±0.25 dB (CL4).
Phase Response: ±15 degrees deviation from linear
phase from 20 Hz to 20 kHz at 1 watt.
Signal to Noise Ratio, A-Weighted: Better than 105
dB (CL1, CL2) or 102 dB (CL4) below rated 1-kHz
power.
Total Harmonic Distortion (THD), 1 kHz at rated
power: 0.5% or less true THD from 20 Hz to 20 kHz.
Intermodulation Distortion (60 Hz and 7 kHz at 4:1):
Less than 0.1% (CL1, CL2) or 0.5% (CL4) at rated
power to 30 dB below rated power at 8 ohms.
Damping Factor (8 ohm): Better than 400 (CL1, CL2)
or 700 (CL4) from 10 Hz to 400 Hz.
Crosstalk, 20 Hz to 20 kHz: Better than 50 dB below
rated power.
Common Mode Rejection (CMR): Better than 40 dB
from 20 Hz to 1 kHz.
DC Output Offset (shorted input): < ±10 mV.
Controls
Level: A detented rotary level control for each channel
located on the rear panel.
Power: An on/off rocker switch located on the front
panel.
Mode: A two-position switch located on the back
panel which, when turned to “Stereo,” operates
the amplifier as two independent channels. When
“Bridge” is selected, the amplifier bridges the two
output channels for twice the output voltage.
Indicators
Signal: A green indicator for each channel which
flashes when a very low-level signal (> –40 dBm) is
present at input. May be used for troubleshooting
cable runs.
Clip: A red indicator for each channel which turns
on when distortion becomes audible in the amplifier
output.
Fault: A red indicator for each channel which indi-
cates amplifier has muted output. Normally off. Status
may be monitored remotely by plugging into back-
panel RJ11 Fault jack.
Power: A blue indicator that turns on when the ampli-
fier has been turned on and has power.
Features
• Low impedance compatibility for applications
where high power, low impedance loads are
the primary requirement.
• Rear panel detented level controls allow for
accurate level settings and secure operation.
• “Contractor-Correct” barrier strip output con-
nectors allow for quick and easy connection,
regardless of the load.
• Active crossover with signal routing available
with optional System Solution Topology mod-
ules.
• 5-Way Fault Indicator serves as a valuable
system troubleshooting aid by quickly alerting
the user of potential problems.
• Advanced protection circuitry guards against:
shorted outputs, open circuits, mismatched
loads, DC, general overheating, high-frequency
overloads and internal faults.
• Can be mounted in standard (19-inch (48.3-
cm)) rack, shallow (14-inch (35.56-cm)) rack,
or stacked on top of each other.
• Accurate, uncolored sound with very low
distortion for the best in music and voice repro-
duction.
• Three-Year, No-Fault, Fully Transferable War-
ranty completely protects your investment and
guarantees its specifications.
• Crown’s Profit Protection Plan guarantees
quick, no-questions-asked replacement of your
covered Contractor Series amplifier should it
fail at any time up to 6 months following date
of installation.
CL1
CL2
CL4
1,400W**
1,200W
600W
2,800W**
2,400W
2 ohm Stereo (per channel)
8 ohm Bridge-Mono
4 ohm Bridge-Mono
8 ohm Stereo (per channel)
4 ohm Stereo (per channel)
CL4
**≥200-V line voltage provides 1,800W (2 ohm stereo)
and 3,600W (4 ohm bridge-mono)
1 kHz
Power
*
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.5% THD.

Crown International
1718 W, Mishawaka Rd.
Elkhart, IN 46517-9439
TEL: [phone]
FAX: [phone]FAX
www.crownaudio.com
6/05 136712-1D
Input/Output
Input Connector (standard module): One Neutrik
Combo connector for each channel which features a
balanced ¼-inch (6.35-mm) phone jack and a 3-pin
female XLR connector, in parallel with a barrier strip
termination.
Input Stage: Input is electronically balanced and
employs precision 1% resistors.
Input Impedance: Nominally 20 k ohms, balanced.
Nominally 10 k ohms, unbalanced.
Input Sensitivity: Channel independent. Factory set at
1.4 volts for standard 1 kHz, 8 ohm power. 26 dB
gain and 0.775 volt sensitivity available as a Service
Option.
Output Impedance: See Figure 1.
Output Connectors: Four-terminal touch-proof barrier
block.
Output Signal:
Stereo: Unbalanced, two-channel.
Bridge-Mono: Balanced, single-channel. Channel 1
controls are active; Channel 2 should be turned
down.
Protection
Contractor 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 loudspeak-
ers from input/output DC, large or dangerous DC off-
sets and turn-on/turn-off transients.
Options
Service Options: SST-4622, SST-3632, SST-4632—
custom two-channel crossover networks with equal-
ization and delay purposely engineered for use with
JBL model 4622, 3632 and 4632 cinema speakers.
SST-SBSC 3632T, SST-SBSC 4632T—custom three-
channel crossover networks with CD-horn equaliza-
tion and mono-summed low-frequency outputs
similarly designed for use with JBL model 3632T and
4632T cinema speakers.
Construction
Rugged steel chassis is formed into a durable
package, then finished with environmentally friendly
powder coat for long life and ease of maintenance.
Cooling: Proportional speed fan in CL1 and CL2;
3-speed fan in CL4.
Dimensions:
Width: EIA Standard 19-inch rack mount
(EIA RS-310-B)
Height: 5.25 inches (13.34 cm)
Depth (behind front mounting surface):
CL1 and CL2: 12.25 inches (31.11 cm) to back of
amplifier.
CL4: 16.25 inches (31.11 cm) to back of amplifier.
CL4: 17.5 inches (14.45 cm) from back of front
rack ears to back of speaker-terminal cover.
Net Weight:
CL1: 32.6 lb (14.8 kg)
CL2: 40.3 lb (18.3 kg)
CL4: 33.3 lb (15.1 kg).
Shipping Weight:
CL1: 32.6 lb (17.5 kg)
CL2: 46.3 lb (21.0 kg)
CL4: 39.3 lb (17.8 kg).
Specifications subject to change without prior notice. Latest
information available at www.crownaudio.com.
Crown and Crown Audio are registered trademarks of Crown
International. Other trademarks are the property of their
respective owners. Printed in U.S.A.
© 2005 Crown Audio®, Inc.
MODE
STEREO BRIDGE
WARNING - TO REDUCE THE
RISK OF FIRE OR ELECTRICAL SHOCK,
DO NOT EXPOSE THIS EQUIPMENT
TO RAIN OR MOISTURE.
AVIS - RISQUE DE CHOC
ELECTRIQUE - NE PAS OUVRIR.
AVERTISSEMENT - ENERGIE
ELECTRIQUE DANGEREUSE VIOR LA
NOTICE DE FONCTIONNEMENT.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CLASS 2 WIRING PERMITTED
IN STEREO
CLASS 1 WIRING REQUIRED IN
BRIDGE MONO
FOR BRIDGE MONO, USE
CH1 + (4/8 ) FOR + AND
CH2 + (4/8 ) FOR - ONLY
Ω
Ω
RESET
CH1
CH1
CH2
OUTPUTS
CH2
MODEL: CL1
~AC VOLTS: AMPS: HZ
RATED OUTPUT: W/CH @ OHMS
ELECTRONIC EQUIPMENT
ELKHART,IN 46517
MADE IN U.S.A.
S\N 000000
0000
Figure 1 CL1, CL2, CL4 Output Impedance
Crown’s Three-Year, No-Fault, Fully Transferable Warranty
Crown offers a Three-Year, No-Fault, Fully Transferable Warranty for every new Crown amplifier—an unsur-
passed industry standard. With this unprecedented No-Fault protection, your new Crown amplifier is war-
ranted to meet or exceed original specifications for the first three years of ownership. During this time, if your
amplifier fails, or does not perform to original specifications, it will be repaired or replaced at our expense.
About the only things not covered by this warranty are those losses normally covered by insurance and those
caused by intentional abuse. And the coverage is transferable, should you sell your amplifier.
See your authorized Crown dealer for full warranty disclosure and details. For customers outside of the USA,
please contact your authorized Crown distributor for warranty information or call 574-294-8200.
CL1, CL2
CL4
CL1
CL2
CL4