DCA 3422

2-Channel Power Amplifier


FEATURES

  • 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" 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 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 @



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
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: 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
Voltage Gain at 8 ohms
40x (32 dB)
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)
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
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

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
THERMAL LOSSES (ALL MODELS)
  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


All specifications are subject to change without notice.