QSC Audio DCA 1222 - Manual (Page 36)

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DCA1824 DCA1644
OUTPUT POWER in watts
FTC: 20 Hz–20 kHz @ 0.03% THD,
all channels driven
8 ohms per channel 170 250
FTC: 20 Hz–20 kHz @ 0.05% THD,
all channels driven
4 ohms per channel 325
FTC: 20 Hz–20 kHz @ 1% THD,
all channels driven
4 ohms per channel 400
EIA: 1 kHz @ 1% THD, one channel driven
8 ohms per channel
4 ohms per channel
450
2 ohms per channel 450
Bridge Mono:
16 ohms, 20 Hz–20 kHz, 0.1% THD 340 500
8 ohms, 20 Hz–20 kHz, 0.1% THD 650 900
4 ohms, 1 kHz, 1% THD 900
(both channel pairs driven, 4Ch. models)
DYNAMIC HEADROOM 2 dB @ 4 ohms
DISTORTION
SMPTE-IM < 0.01% < 0.01%
FREQUENCY RESPONSE 20 Hz–20 kHz, ±0.15 dB
(at 10 dB below rated output power) -3 dB points: 5 Hz and 100 kHz
DAMPING FACTOR > 500 @ 8 ohms
NOISE (unweighted 20 Hz to 20 kHz, below rated output) 106 dB 107 dB
VOLTAGE GAIN 40× (32 dB)
INPUT SENSITIVITY, V RMS
full rated power @ 8 ohms 0.93v (+1.6 dBu) 1.12v (+3.2 dBu)
full rated power @ 4 ohms 0.80v (+0.3 dBu) 1.00v (+2.2 dBu)
INPUT IMPEDANCE 10K ohms unbalanced
20K ohms balanced
# OF CHANNELS 4 4
CONTROLS Front: AC switch, Ch. 1–4 gain knobs with 21 detents
Rear: two 10-position DIP switches
INDICATORS POWER: Green LED CLIP: Red LED, 1 per channel
PARALLEL: Yellow LED -10 dB: Green LED, 1 per channel
BRIDGED: Yellow LED -20 dB: Green LED, 1 per channel
SIGNAL: Green LED, 1 per channel
CONNECTORS Input: Detachable "Euro-style" terminal blocks (1 per channel)
Output: Two barrier strips
Two HD-15 female connector for QSControl or DCM Digital Cinema Monitor
COOLING Forced-air, with variable-speed fan; back-to-front air flow
AMPLIFIER PROTECTION Full short circuit, open circuit, thermal, ultrasonic, and RF protection
Stable into reactive or mismatched loads
S P E C I F I C AT I O N S S P É C I F I C AT I O N S TECHNISCHE DATEN ESPECIFICACIONES