Crown Audio CH3 Leaflet

70V Stereo (per channel)

1 kHz 
Power

8 ohm Bridge-Mono

4 ohm Stereo (per channel)

8 ohm Stereo (per channel)

*1 kHz Power: refers to maximum average power in watts 
at 1 kHz with 0.5% THD.

*

140V Bridge-Mono

2 ohm Stereo (per channel)

4 ohm Bridge-Mono

**

≥200V line voltage provides 1800W (2 ohm stereo) 

and 3600W (4 ohm bridge-mono).

70V Stereo (per channel)

1 kHz 
Power

8 ohm Bridge-Mono

4 ohm Stereo (per channel)

8 ohm Stereo (per channel)

*1 kHz Power: refers to maximum average power in watts 
at 1 kHz with 0.5% THD.

*

140V Bridge-Mono

70V Stereo (per channel)

1 kHz 
Power

8 ohm Bridge-Mono

4 ohm Stereo (per channel)

8 ohm Stereo (per channel)

*1 kHz Power: refers to maximum average power in watts 
at 1 kHz with 0.5% THD.

*

140V Bridge-Mono

ooking for a quality, constant voltage and low 
impedance two channel amplifi er for your res-
taurant, nightclub, retail store, school or house 

of worship projects? The Crown

®

 “Contractor Series” 

amplifi ers are designed just for you.

CH-Series amplifi ers can directly drive “constant 
voltage” lines, so you can avoid the expense of 
adding step-up transformers for distributed loud-
speaker systems. 

All Contractor-Series amplifi ers feature Crown’s 
exclusive SST (System Solutions Topologies) expan-
sion system. The SST expansion system makes it 
easy to tailor your amplifi er to a specifi c application 
or to add future technology as it develops.

With an incredibly wide range of power and fea-
ture/benefi ts, Contractor-Series amplifi ers 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.

Note: All measurements apply to amplifi ers in stereo 
mode with 8 ohm loads and an input sensitivity of 26 
dB gain, 1 kHz at rated power unless other otherwise 
specifi ed. Specifi cations  for units supplied outside 
the U.S.A. may vary slightly at different AC voltages 
and frequencies.

Output Power: See power charts below.

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.

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.

AC Line Requirements:
Note: North American units are 60 Hz only. All other 
models are 50/60 Hz. Voltages are ±10%.

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).

AC Line Connector: Detachable 15A IEC connector 
with country-specifi c plug.

Frequency Response, 20 Hz to 20 kHz at 1 watt: ±0.1 
dB (CH1, CH2) or ±0.25 dB (CH4).

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 (CH1, CH2) or 102 dB (CH4) 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% (CH1, CH2) or 0.5% (CH4) at rated 
power to 30 dB below rated power at 8 ohms.

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.

•  Drives multiple impedances, with both low 

impedance and high impedance outputs per 
channel.

•  High-pass filter for each channel provides 

low-frequency roll off to eliminate step down 
transformer saturation when used in 70V dis-
tributed systems.

•  Shallow chassis design, allowing for installa-

tion in most wall-mount racks.

•  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.

•  Advanced protection circuitry guards against: 

shorted outputs, open circuits, DC, mismatched 
loads, 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 specifi cations.

•     Crown’s Profi t Protection Plan guarantees quick, 

no-questions-asked replacement of your covered 
Contractor Series amplifi er should it fail at any 
time up to 6 months following date of installation.