C O N T R A C T O R S E R I E S
CH1
CH2
CH4
ooking 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.
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Features
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Drives multiple impedances, with both low
impedance and high impedance outputs per
channel.
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Advanced protection circuitry guards against:
shorted outputs, open circuits, DC, mismatched
loads, general overheating, high-frequency
overloads and internal faults.
CH-Series amplifiers can directly drive “constant
voltage” lines, so you can avoid the expense of
adding step-up transformers for distributed loud-
speaker systems.
•
High-pass filter for each channel provides
low-frequency roll off to eliminate step down
transformer saturation when used in 70V dis-
tributed systems.
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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.
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.
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•
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Shallow chassis design, allowing for installa-
tion in most wall-mount racks.
Accurate, uncolored sound with very low
distortion for the best in music and voice repro-
duction.
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.
Rear panel detented level controls allow for
accurate level settings and secure operation.
Three-Year, No-Fault, Fully Transferable War-
ranty completely protects your investment and
guarantees its specifications.
“Contractor-Correct” barrier strip output con-
nectors allow for quick and easy connection,
regardless of the load.
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.
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
Specifications
Voltage Gain, 1 kHz, 1.4V sensitivity:
Performance
Frequency Response, 20 Hz to 20 kHz at 1 watt: 0.1
dB (CH1, CH2) or 0.25 dB (CH4).
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.
30.5 dB (CH1) or 32.1 dB (CH2) or 34 dB (CH4)
at 8 ohms.
34 dB (CH1) or 34 dB (CH2) or 34 dB (CH4) at
70V.
Phase Response: 15 degrees deviation from linear
phase from 20 Hz to 20 kHz at 1 watt.
AC Line Requirements:
Note: North American units are 60 Hz only. All other
models are 50/60 Hz. Voltages are 10%.
Signal to Noise Ratio, A-Weighted: Better than 105
dB (CH1, CH2) or 102 dB (CH4) below rated 1-kHz
power.
Power
Output Power: See power charts below.
AC Line Current:
Total Harmonic Distortion (THD), 1 kHz at rated
power: 0.5% or less true THD from 20 Hz to 20 kHz.
Load Impedance:
100V: 7.6A (CH1) or 11.4A (CH2) or 8.5A (CH4).
120V: 6.3A (CH1) or 9.5A (CH2) or 7.1A (CH4).
230-240V: 3.5A (CH1) or 5.0A (CH2) or
3.7A (CH4).
Safe with all types of loads.
4 and 8 ohm Stereo.
16 ohm (CH1) or 8 ohm (CH2) or 4 ohm (CH4) at
70V Stereo.
4, 8 and 16 ohm Bridge.
32 ohm (CH1) or 16 ohm (CH2) or 8 ohm (CH4) at
140V Bridge.
64 ohm (CH1) or 32 ohm (CH2) at 200V Bridge.
Intermodulation Distortion (60 Hz and 7 kHz at 4:1):
Less than 0.1% (CH1, CH2) or 0.5% (CH4) at rated
power to 30 dB below rated power at 8 ohms.
AC Line Connector: Detachable 15A IEC connector
with country-specific plug.
Damping Factor (8 ohm): Better than 400 (CH1, CH2)
or 700 (CH4) 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.
*1 kHz
Power
CH4
1,400W**
2 ohm Stereo (per channel)
*1 kHz
Power
*1 kHz
Power
1,200W
600W
4 ohm Stereo (per channel)
8 ohm Stereo (per channel)
70V Stereo (per channel)
4 ohm Bridge-Mono
CH1
CH2
450W
275W
300W
900W
600W
660W
400W
600W
1,320W
1,200W
4 ohm Stereo (per channel)
8 ohm Stereo (per channel)
70V Stereo (per channel)
8 ohm Bridge-Mono
4 ohm Stereo (per channel)
8 ohm Stereo (per channel)
70V Stereo (per channel)
8 ohm Bridge-Mono
1,200W
2,800W**
2,400W
2,400W
8 ohm Bridge-Mono
140V Bridge-Mono
140V Bridge-Mono
140V Bridge-Mono
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.5% THD.
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.5% THD.
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.5% THD.
**≥200V line voltage provides 1800W (2 ohm stereo)
and 3600W (4 ohm bridge-mono).
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