QSC Digital Cinema Amplifier - 4 Channel

DCA  (4 Channel) Features

  • The DCA 1824 is ideal for surround channels-each channel can power up to four 8 ohms speakers in parallel for a total of up to 16 speakers.
  • The DCA 1644 is perfect for powering screen channels in small to medium theatres, or for powering mids and highs in tri-amp systems for larger theatres.
  • DCAs are equipped with a DataPort for use with QSC DCM-Digital Cinema Monitors, a total system solution that greatly reduces labor & wiring costs.
  • Compact size (2-RU, 14" deep) ideal for use in console-mounted sound systems
  • All models only 21 lbs. for easier racking and shipping.
  • Active Inrush Limiting won't blow circuit breakers at turn-on.
  • Gain control security cover protects amp from misadjustment.
  • 3 year warranty plus optional 3 year extended service contract!


Stereo Mode (both channels driven)    
8 ohms FTC 20 Hz-20 kHz 0.05% THD 250W 170W
8 ohms EIA 1 kHz 1% THD - -
4 ohms EIA 20 Hz-20 kHz 0.1% THD 400W* 250W
4 ohms EIA 1 kHz 1% THD 450 -
2 ohms EIA 1 kHz 1% THD not rated 450W
Bridge Mono Mode    
16 ohms FTC 20 Hz-20 kHz 0.1% THD 500W 340W
8 ohms EIA 20 Hz-20 kHz 0.1% THD 900W* 500W
4 ohms EIA 1 kHz 1% THD not rated 900W
Signal-to-noise (20 Hz-20 kHz) <-105 dB <-105 dB
Input Sensitivity @ 8 ohms 1.12 Vrms 0.93 Vrms
Input Sensitivity @ 4 ohms 1.00 Vrms 0.80 Vrms
Output Circuitry AB+B AB+B
Power Requirements (1/8 pink noise) 10A @ 4 ohms 9A @ 8 ohms
Distortion (SMPTE-IM) Less than 0.01% Less than 0.01%

All Models
Distortion (typical)
20 Hz-20 kHz: 10 dB below rated power
1.0 kHz and below: full rated power
Less than 0.01% THD
Frequency Response 20 Hz-20 kHz, 0.2 dB   8 Hz-50 kHz, +0/-3 dB
Damping Factor (1 kHz and below) greater than 500
Input Impedance 10 K ohms unbalanced, 20 K ohms balanced
Input Clipping 10 Vrms (+22 dBu)
Cooling Variable speed fan (off at idle), rear to front airflow
Connectors (each channel) Input: 3 pin detachable terminal blocks (1 each per channel)
Output: Safety-shrouded barrier strip, including monitor output
Dataport: One HD-15 per pair of channels
Controls Front: AC switch, Ch.1, Ch.2, Ch.3 and Ch. 4 gain knobs
Rear: DIP switch for Ch.1, Ch.2, Ch.3 and Ch.4: clip limiter on/off, LF filter on/off,
LF filter freq select-30 or 50 Hz; inputs parallel or stereo; bridge mode
Indicators PARALLEL INPUTS: Yellow LED (1 per pair of channels)
BRIDGED: Yellow LED (1 per pair of channels)
CLIP/PROT: Red LED (1 per channel)
LEVEL-10 dB: Green LED (1 per channel)
LEVEL-20: Green LED (1 per channel)
SIGNAL-35 dB: Green LED (1 per channel)
Amplifier Protection Full short circuit, open circuit, thermal, ultrasonic, & protection. Stable into reactive or mismatched loads.
Load Protection On/off muting, DC-fault power supply shutdown
Dimensions 19" (48.3 cm) rack mounting, 3.5" (8.9 cm) tall (2 rack spaces),
14" (35.6 cm) deep (from front mounting rails)
Weight 21 lb (9.5 kg) net, 27 lbs (12.3 kg) shipping
Voltage Gain 40x (32 dB)

1025 Pine Meadows Ct., Martinez, California 94553 Phone: 925-372-7603 Fax: 925-372-7658
E-Mail: BACP2000@AOL.com Web: www.BACPINC.com