QSC Audio DCA 1824 - Manual (Page 2)

DCA1644 DCA1824
Stereo Mode Continuous average output power per channel
8Ω / FTC 20 Hz – 20 kHz / 0.05% THD 250 W 170 W
4Ω / FTC 20 Hz – 20 kHz / 0.1% THD 400 W (0.1% THD, 1 kHz) 250 W
4Ω / EIA 1 kHz / 1% THD 450 W −
2Ω / EIA 1 kHz / 1% THD NR 450 W
Bridge-Mono Mode Continuous average output power
16Ω / FTC 20 Hz – 20 kHz / 0.1% THD 500 W 340 W
8Ω / FTC 20 Hz – 20 kHz / 0.1% THD 800 W (0.1% THD, 1 kHz) 500 W
4Ω / EIA 1 kHz / 1% THD NR 900 W
Signal to Noise (20 Hz – 20 kHz) -105 dB -105 dB
Input Sensitivity at 8Ω 1.12 Vrms 0.93 Vrms
Input Sensitivity at 4Ω 1.00 Vrms 0.8 Vrms
Power Requirements (1/8 pink noise) 14 A at 4Ω 10 A at 8Ω
Output Circuitry Class AB+B
Distortion (SMPTE-IM) < 0.01%
Distortion (typical)
20 Hz – 20 kHz: 10 dB below rated power < 0.02% THD / 4Ω and 8Ω
1.0 kHz and below: full rated power < 0.02% THD / 4Ω and 8Ω
Frequency Response 20 Hz – 20 kHz, ± 0.2 dB | 8 Hz – 50 kHz, + 0, -3 dB
Damping factor (1 kHz and below) > 500
Input Impedance 10k ohms unbalanced, 20k ohms balanced
Input Clipping 10 Vrms (+22 dBu)
Cooling Variable-speed fan, rear-to-front air flow
Connectors (each channel) Input: 3-pin detachable terminal blocks (one each per channel)
Output: Safety shrouded barrier strip, including monitor ouput
DataPort: One HD15 per pair of channels
Controls Front: AC switch, Ch. 1, 2, 3 and 4 gain knobs
Rear: DIP switches for Ch. 1, 2, 3 and 4 | clip limiter on/off | LF filter on/off | LF filter freq select -30 or 50 Hz
inputs parallel or stereo; bridge mode
Indicators Power-On: Green LED
Parallel inputs: Yellow LED | Bridged: Yellow LED (one per pair of channels)
Clip/Prot: Red LED | Level -10 dB: Green LED | Level -20 dB: Green LED | Signal -35 dB: Green LED (one per channel)
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) 3.5" (8.9 cm) 2 RU x 19" (48.3 cm) rack mounting x 14" (35.6 cm) from front mounting rails
Voltage Gain 40x (32 dB)
Weight - Net 21 lb (9.5 kg)
Optional Accessories DCM Digital Cinema Monitors provide complete crossover and monitor functions
BASIS™ and QSControl.net™ for a complete networked audio solution, including DSP and control and monitoring of ampli
fiers and loudspeakers
The DSP-3 and DSP-4 digital signal processor features a fully programmable signal chain and includes crossover filters plus
numerous additional dynamics processors
* at 120 VAC, both channels driven; multiply current by 0.5 for 230V units FTC: all channels driven EIA: one channel driven
DCA
4-channel Specifications
qscaudio.com
Specifications subject to change without notice.
1675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: 800/854-4079 or 714/957-7100 • Fax: 714/754-6174
DCA 4-channel Spec Sheet - 06/05/08
QSC, the QSC logo, PowerLight, QSControl.net and BASIS are registered trademarks of QSC Audio Products, LLC in the U.S. Patent and Trademark office and other countries.
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