Crown Audio Com-Tech "00 Series" - Manual (Page 31)

Page 31
Com-Tech 200/400/800/1600 Power Amplifiers
terminal connections for each output channel.
Output Impedance: Less than 10 milliohms in series
with less than 2 microhenries (see Figure 6.11).
DC Output Offset: Less than ±10 millivolts.
Output Signal
Dual: Unbalanced, two-channel.
Bridge-Mono: Balanced, single-channel. Channel 1
controls are active; channel 2 should be turned down.
Parallel-Mono: Unbalanced, single-channel. Chan-
nel 1 controls are active; channel 2 is bypassed.
Protection
Com-Tech 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
blow-ups. They also protect loudspeakers from input/
output DC and turn-on/turn-off transients.
If unreasonable operating conditions occur, the pat-
ented
ODEP circuitry will proportionally limit the drive
level to protect the output devices, particularly in the
case of elevated temperature. Transformer overheat-
ing will result in a temporary shutdown of both chan-
nels; when it has cooled to a safe temperature, the
transformer will automatically reset itself. Controlled
slew rate voltage amplifiers protect against RF burn-
outs, and input overload protection is provided by cur-
rent-limiting resistance at the input.
Turn On: The four second turn-on delay prevents dan-
gerous turn-on transients. Turn-on occurs at zero
crossing of the AC waveform, so power sequencers
are rarely needed with multiple units.
Note: The turn-on
delay time may be changed. Contact Crown’s Techni-
cal Support Group for details.
Circuit Breaker: Circuit breaker current ratings vary
based on the Com-Tech model and AC mains voltage.
All 100/120 VAC Units:
Com-Tech 200: 8 amperes.
Com-Tech 400: 15 amperes.
Com-Tech 800: 20 amperes.
Com-Tech 1600 : 30 amperes.
All 220/240 VAC Units:
Com-Tech 200: 4 amperes.
Com-Tech 400: 8 amperes.
Com-Tech 800: 10 amperes.
Com-Tech 1600 : 20 amperes.
Construction
Durable black finish on the steel chassis, front panel
Lexan overlay, and specially-designed flow-through
ventilation from front to side panels.
Cooling: Internal heat sinks with on-demand forced air
cooling (fan is optional for the North American Com-
Tech 200 ; see Sections 3.2.1 and 8.2).
Dimensions: 19 inch (48.3 cm) standard rack mount
width (EIA RS-310-B), 16 inch (40.6 cm) depth behind
mounting surface, and 0.25 inches (0.6 cm) in front of
mounting surface. Amplifier height varies among the
available models and with different AC mains voltage
requirements (see Section 3.1).
Approximate Weight: Center of gravity is 6 inches (15.2
cm) behind the front mounting surface.
120 VAC, 60 Hz North American Units:
Com-Tech 200: 29 pounds, 7 ounces (13.4 kg) net;
33 pounds, 14 ounces (15.4 kg) shipping weight.
Com-Tech 400: 31 pounds, 15 ounces (14.5 kg) net;
36 pounds, 6 ounces (16.5 kg) shipping weight.
Com-Tech 800: 47 pounds, 4 ounces (21.5 kg) net;
50 pounds, 8 ounces (22.9 kg) shipping weight.
Com-Tech 1600: 57 pounds, 14 ounces (26.3 kg)
net; 66 pounds, 10 ounces (30.2 kg) shipping weight.
100/120 VAC, 50/60 Hz Units:
Com-Tech 200: 31 pounds, 6 ounces (14.2 kg) net;
35 pounds, 8 ounces (16.1 kg) shipping weight.
Com-Tech 400: 38 pounds, 15 ounces (17.7 kg) net;
43 pounds, 4 ounces (19.6 kg) shipping weight.
Com-Tech 800: 45 pounds, 1 ounces (20.5 kg) net;
49 pounds, 10 ounces (22.5 kg) shipping weight.
Com-Tech 1600: 54 pounds, 11 ounces (24.8 kg)
net; 64 pounds, 3 ounces (29.1 kg) shipping weight.
220/240 VAC, 50/60 Hz Units:
Com-Tech 200: 31 pounds, 12 ounces (14.4 kg) net;
35 pounds, 14 ounces (16.3 kg) shipping weight.
Com-Tech 400: 38 pounds, 7 ounces (17.5 kg) net;
42 pounds, 12 ounces (19.4 kg) shipping weight.
Com-Tech 800: 45 pounds, 4 ounces (20.5 kg) net;
49 pounds, 13 ounces (22.6 kg) shipping weight.
Com-Tech 1600: 55 pounds, 2 ounces (25.0 kg) net;
64 pounds, 10 ounces (29.3 kg) shipping weight.