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CH and CL Series Power Amplifiers
Operation Manual
Minimum Guaranteed Power CH1 CH2 CH4
120V/60 Hz Units, Dual mode, per channel, both channels driven
1 kHz at rated THD
2 ohms
4 ohms
8 ohms
70V
450W
275W
300W
660W
400W
600W
1,400W
1,200W
600W
1,200W
120V/60 Hz Units, Bridge mono mode
1 kHz at rated THD
4 ohms
8 ohms
140V
900W
600W
1,320W
1,200W
2,800W
2,400W
2,400W
Performance CH1 CH2 CH4
Frequency Response (at 1 watt, 20 Hz - 20 kHz) ± 0.1 dB ± 0.1 dB ± 0.25 dB
Phase Response (at 1 watt, 20 Hz - 20 kHz) ± 15° ± 15° ± 15°
Signal to Noise Ratio below rated 1 kHz power (A-weighted) > 105 dB > 105 dB > 100 dB
Total Harmonic Distortion (THD) at rated 1 kHz power, 20 Hz to 20 kHz < 0.5% < 0.5% < 0.5%
Intermodulation Distortion (IMD) 60 Hz and 7 kHz at 4:1,
from rated power to 30 dB below rated power at 8 ohms
< 0.1% < 0.1% < 0.5%
Damping Factor (8 ohm), 10 Hz to 400 Hz > 600 > 600 > 1000
Crosstalk (below rated power, 20 Hz to 20 kHz)
*at 10 kHz
> 50 dB > 50 dB > 50 dB*
Common Mode Rejection (CMR), 20 Hz to 1 kHz > 40 dB > 40 dB > 40 dB
DC Output Offset (Shorted input) ± 10 mV ± 10 mV ± 10 mV
Input Impedance nominally balanced, nominally unbalanced 20 kilohms, 10 kilohms 20 kilohms, 10 kilohms 20 kilohms, 10 kilohms
Load Impedance (Note: Safe with all types of loads)
Stereo
Bridge Mono
4/8 and 16 ohm (70V)
8/16 and 32 ohms(140V)
4/8 and 8 ohm (70V),
8/16 and 16 ohms (140V)
4/8 and 4 ohm (70V)
8/16 and 8 ohm (140V)
Voltage Gain (at maximum level setting), 1 kHz, 1.4V sensitivity
4/8 Ohm Operation
70V Operation
30.5 dB
34.0 dB
32.1 dB
34.0 dB
34.0 dB
34.0 dB
Required AC Mains (voltages ± 10%) 100V, 7.6A, 60 Hz
120V, 6.3A, 60 Hz
230-240V, 3.5A, 60 Hz
100V, 11.4A, 60 Hz
120V, 9.5A, 60 Hz
230-240V, 5.0A, 60 Hz
100V, 8.5A, 50/60 Hz
120V, 7.1A, 50/60 Hz
230-240V, 3.7A, 50/60 Hz
Cooling Proportional speed fan Proportional speed fan 3-speed Fan-On-Demand
Dimensions: Width, Height, Depth 19 in. (48.3 cm) x 5.25 in. (13.34 cm) x
12.25 in. (31.11 cm)
19 in. (48.3 cm) x 5.25 in. (13.34 cm) x
12.25 in. (31.11 cm)
19 in. (48.3 cm) x 5.25 in. (13.34 cm) x
16.25 in*. (36.56 cm)*
Net Weight, Shipping Weight 40.6 lb (18.4 kg), 46.6 lb (21.1 kg) 48.3 lb (21.9 kg), 54.3 lb (24.6 kg) 33.3 lb (15.1 kg), 39.3 lb (17.8 kg)
The following specifications apply to all models in Dual 8/4 ohm mode with 8-ohm loads unless otherwise specified.
7 Specifications
* CH4 depth is 17.5 in. (14.45 cm) from back of front rack ears to back of speaker-terminals cover.