DCA 1622 – 2 Channel Power Amplifier
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2-channel models offer power points from 300 to 800 watts per channel in a two rack, 21 pound amplifier. With QSC’s exclusive PowerLight® switching technology you’ll hear ultra-powerful bass and superior highs in every scene.
FEATURES DCA 1622
– Active Inrush Limiting – won’t blow circuit breakers at turn-on (a QSC cinema exclusive!)
– Both speaker and monitor panel outputs (a QSC cinema exclusive!)
– Exclusive PowerLight power supply for great bass (a QSC cinema exclusive!)
– A hum-free noise floor and ultra-low distortion
– Optional crossover modules for bi-amp, tri-amp and subwoofer applications
– Only 3.5 inches high; even the most powerful systems can be built with only one rack
– DataPort interface for DCP Digital Cinema Processors and DCM Digital Cinema Monitors – a QSC cinema exclusive!
– Patented Output Averaging™ short circuit protection
– 14-inch deep – works with standard depth racks for lower cost and less floor space
– Only 21 pounds, for easier racking and shipping – no need to remove amps from pre-wired systems before shipping
– Gain control security cover protects amp against tampering and misadjustment
– Variable-speed fan cooling and back-to-front air flow
– Neutrik Speakon® and safety-shrouded barrier strip output connectors
– LED indicators for metering, status, and operating mode (a QSC cinema exclusive!)
SPECIFICATIONS DCA 1622
| DCA 1222 | DCA 1622 | DCA 2422 | DCA 3022 | DCA 3422 | |
| 8Ω, 20 Hz–20 kHz, 0.03% THD | 200 W | 300 W | 425 W | 550 W | 700 W |
| 4Ω, 20 Hz–20 kHz 0.05% THD | 325 W | 500 W | 700 W | 900 W | 1100 W |
| EIA: 1 kHz, 1% THD @ 8Ω 4Ω 2Ω |
215 W 375 W 600 W |
350 W 600 W 800 W |
475 W 825 W 1200 W |
625 W 1050 W 1500 W |
800 W 1250 W 1700 W |
| BRIDGED MONO MODE | |||||
| 16Ω, 20 Hz–20 kHz, 0.1% THD | 400 W | 600 W | 850 W | 1100 W | 1400 W |
| 8Ω, 20 Hz–20 kHz, 0.1% THD | 700 W | 1100 W | 1500 W | 2000 W | 2200 W |
| 4Ω, 1 kHz, 1% THD | 1200 W | 1600 W | 2400 W | 3000 W | 3400 W |
| Signal to Noise 20 Hz–20 kHz, unweighted |
> 106 dB | > 107 dB | > 108 dB | > 107 dB | > 107 dB |
| Input Sensitivity full rated power @ 8 ohms |
1.0 V rms +2.2 dBu |
1.2 V rms +3.9 dBu |
1.5 V rms +5.5 dBu |
1.7 V rms +6.8 dBu |
1.9 V rms +7.8 dBu |
| Input Sensitivity full rated power @ 4 ohms |
0.9 V rms +1.3 dBu |
1.1 V rms +3.2 dBu |
1.3 V rms +4.6 dBu |
1.5 V rms +5.7 dBu |
1.7 V rms +6.8 dBu |
| Output Circuitry Class Type | AB | AB | 2-Step H | 2-Step H | 2-Step H |
| Distortion (SMPTE-IM) | < 0.01% | < 0.01% | < 0.02% | < 0.02% | < 0.02% |
| 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 @ 8 and 4 ohms Less than 0.01% THD @ 8 and 4 ohms |
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| Frequency Response (LF filter switched off) |
20 Hz–20 kHz, ± 0.2 dB 8 Hz–50 kHz, + 0/-3 dB |
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| Damping Factor 1 kHz and below |
Greater than 500
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| Input Impedance |
10 kΩ unbalanced, 20 kΩ balanced
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| Input Clipping |
10 V rms (+22 dBu)
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| Cooling |
Variable-speed fan, rear-to-front air flow
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| Connectors, each channel |
Input: 1/4″ TRS, 3-pin XLR & 3-pin detachable terminal block
Output: Neutrik Speakon® and safety-shrouded barrier strip, including Monitor output DataPort: One HD15
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| Voltage Gain at 8 ohms |
40x (32 dB)
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| Controls |
Front: AC switch, Ch. 1 and Ch. 1 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) |
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| 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: Green LED |
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| Amplifier Protection |
Full short circuit, open circuit, thermal, ultrasonic, and RF protection.
Stable into reactive or mismatched loads. |
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| Load Protection |
On/off muting, DC-fault power supply shutdown
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| Dimensions (HWD) inches | 3.5 x 19 x 14 | ||||
| Dimensions (HWD) mm |
89 x 483 x 356
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| Weight |
21 lb (9.5 kg) net
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| 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 |
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POWER PER CHANNEL, STEREO MODE, both channels driven
| CURRENT CONSUMPTION | DCA 1222 | DCA 1622 | DCA 2422 | DCA 3022 | DCA 3422 | |
| Idle current (no audio program material) |
0.8 A | 0.9 A | 0.9 A | 0.9 A | 0.9 A | |
| 1/8 Power (Pink Noise) (typical of program material at maximum unclipped or rarely clipping power) |
8 ohms 4 ohms 2 ohms |
3.8 A 6.0 A 9.6 A |
5.6 A 9.0 A 14.0 A |
5.0 A 7.9 A 11.8 A |
6.0 A 9.5 A 14.0 A |
7.6 A 11.6 A 16.6 A |
| 1/3 Power (Pink Noise) (typical of program material with severe clipping) |
8 ohms 4 ohms 2 ohms |
5.4 A 8.9 A 14.3 A |
8.0 A 13.3 A 21.0 A |
8.4 A 13.5 A 22.0 A |
11.0 A 17.0 A 27.0 A |
13.1 A 20.0 A 30.4 A |
| Note: values are for 120 VAC; multiply values by 0.5 for 230V units | ||||||
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THERMAL LOSSES (ALL MODELS)
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| Idle | 1/8 Power (pink noise) |
1/3 Power (pink noise) |
Full Power (sine) | ||||||
| Model | Load | BTU/hr | kcal/hr | BTU/hr | kcal/hr | BTU/hr | kcal/hr | BTU/hr | kcal/hr |
| DCA1222 | 8 ohms + 8 ohms 4 ohms + 4 ohms 2 ohms + 2 ohms |
200 200 200 |
50 50 50 |
565 995 1740 |
145 250 440 |
720 1245 2255 |
180 315 570 |
715 1295 2425 |
180 325 610 |
| DCA1622 | 8 ohms + 8 ohms 4 ohms + 4 ohms 2 ohms + 2 ohms |
165 165 165 |
40 40 40 |
910 1570 2560 |
230 395 645 |
1130 1945 3470 |
285 490 875 |
1090 1875 3585 |
275 475 905 |
| DCA2422 | 8 ohms + 8 ohms 4 ohms + 4 ohms 2 ohms + 2 ohms |
200 200 200 |
50 50 50 |
790 1310 2255 |
200 330 570 |
1080 1910 3190 |
275 480 805 |
1245 2320 4610 |
315 585 1160 |
| DCA3022 | 8 ohms + 8 ohms 4 ohms + 4 ohms 2 ohms + 2 ohms |
220 220 220 |
55 55 55 |
900 1525 2305 |
225 385 580 |
1415 2560 4265 |
355 645 1075 |
1705 3070 5835 |
430 775 1470 |
| DCA3422 | 8 ohms + 8 ohms 4 ohms + 4 ohms 2 ohms + 2 ohms |
225 225 225 |
57 57 57 |
1195 2135 3975 |
300 540 1000 |
1760 2335 5210 |
445 590 1315 |
2050 3755 NA |
515 945 NA |
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