Crown PIP-AMC Technical Information download pdf (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.

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