FEATURES

• The DCA 1824 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/DCP - Digital Cinema Monitor; Digital Cinema Processor, a total system solution that greatly reduces labor & wiring costs.
• Compact size (2-RU, 14-inch deep) ideal for use in console-mounted sound systems
• All models weigh only 21 pounds, 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!

SPECIFICATIONS	DCA 1644	DCA 1824
8Ω, 20 Hz–20 kHz, 0.05% THD	Continuous Avg. output per channel 250 W	Continuous Avg. output per channel 170 W
4Ω, 20 Hz–20 kHz 0.1% THD	400 W (1 kHz)	250 W
EIA: 1 kHz, 1% THD @ 4Ω 2Ω	450 W not rated	- 450 W
BRIDGED MONO MODE
16Ω, 20 Hz–20 kHz, 0.1% THD	500 W	340 W
8Ω, 20 Hz–20 kHz, 0.1% THD	800 W (0.1% THD, 1 kHz)	500 W
4Ω, 1 kHz, 1% THD	not rated	900 W
Signal to Noise 20 Hz–20 kHz, unweighted	- 105 dB	- 105 dB
Input Sensitivity full rated power @ 8 ohms	1.12 V rms	0.93 V rms
Input Sensitivity full rated power @ 4 ohms	1.0 V rms	0.8 V rms
Output Circuitry Class Type	AB+B	AB+B
Distortion (SMPTE-IM)	< 0.01%	< 0.01%
	BOTH MODELS
Distortion (Typical) 20 Hz–20 kHz: 10 dB below rated power 1.0 kHz and below: full rated power	Less than 0.02% THD @ 8 and 4 ohms Less than 0.02% THD @ 8 and 4 ohms
Frequency Response (LF filter switched off)	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 kΩ unbalanced, 20 kΩ balanced
Input Clipping	10 V rms (+22 dBu)
Cooling	Variable-speed fan, rear-to-front air flow
Connectors, each channel	Input: 3-pin detachable terminal blocks Output: Safety-shrouded barrier strip, including monitor output DataPort: One HD15 per pair of channels
Voltage Gain at 8 ohms	40x (32 dB)
Controls	Front: AC switch, Ch. 1,2,3 and 4 recessed gain knobs Rear: DIP switch (Clip Limiter on/off, each channel; LF Filter on/off, each channel; LF Filter Freq select 30 or 50 Hz, each channel; Inputs Parallel or Stereo; Bridge Mode)
Indicators	1 each per channel: CLIP/PROT: Red LED LEVEL -10 dB: Green LED LEVEL -20 dB: Green LED SIGNAL -35 dB: Green LED BRIDGED: Yellow LED PARALLEL INPUTS: Yellow LED POWER ON: Green LED
Amplifier Protection	Full short circuit, open circuit, thermal, ultrasonic, and RF protection. Stable into reactive or mismatched loads.
Load Protection	On/off muting, DC-fault power supply shutdown
Dimensions (HWD) inches	3.5 x 19 x 14
Dimensions (HWD) mm	89 x 483 x 356
Weight	21 lb (9.5 kg) net
Optional Accessories Download the Cinema Accessories for DCA Amps User Manual (PDF 410k)	XC-3 Cinema Crossover, for bi-amp applications with all commonly used cinema speakers SF-3 Subwoofer Filter, an adjustable highpass filter for subwoofers LF-3 Low Frequency Filter, used with the XC-3 for tri-amp applications