QSC Digital Cinema Amplifier

DCA 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 PowerWave\0xAA 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 DCM-Digital Cinema Monitor (a QSC cinema exclusive!)
  • Patented Output Averaging\0xAA short circuit protection
  • 14" deep-works with standard depth racks for lower cost and less floor space
  • 21 lbs for easier racking & shipping\0xD1no need to remove amps from pre-wired systems before shipping
  • Gain control security cover protects amp from misadjustment
  • Variable-speed fan cooling with zero-speed at idle and back-to-front air flow
  • Neutrik SpeakonTM and safety-shrouded barrier strip output connectors
  • LED indicators for metering, status, and operating mode (a QSC cinema exclusive!)

 
DCA SPECIFICATIONS DCA1222 DCA1622 DCA2422 DCA3022 DCA3422
Stereo Mode Continuous Average Output Power per Channel, Stereo Mode
(Both Channels Driven)
  8 ohms/Ch,
    20Hz-20kHz, 0.03% THD		 200W 300W 425W 550W 700W
  4 ohms/Ch,
    20Hz-20kHz, 0.05% THD		 325W 500W 700W 900W 1100W
EIA: 1kHz ,1% THD @
  8 ohms/Ch
  4 ohms
  2 ohms
215W
375W
600W
325W
550W
800W
475W
825W
1200W
625W
1050W
1500W
800W
1250W
1700W
Bridge Mono Mode Continuous Average Output Power, Bridge Mono Mode
  16 ohms,
    20Hz-20kHz, 0.1% THD		 400W 600W 850W 1100W 1400W
  8 ohms,
    20Hz-20kHz, 0.1% THD		 700W 1100W 1500W 2000W 2200W
  4 ohms,
    1kHz, 1% THD		 1200W 1600W 2400W 3000W
 3400W
Signal to Noise
20Hz-20kHz, unweighted		 < -106 dB < -107 dB < -108 dB < -107 dB < -107 dB
Input Sensitivity
Full Rated Power @ 8 ohms		 1.0Vrms
+2.2dBu		 1.2Vrms
+3.9dBu		 1.5Vrms
+5.5dBu		 1.7Vrms
+6.8dBu		 1.9Vrms
+7.8dBu
Input Sensitivity
Full Rated Power @ 4 ohms		 0.9Vrms
+1.3dBu		 1.1Vrms
+3.2dBu		 1.3Vrms
+4.6dBu		 1.5Vrms
+5.7dBu		 1.7Vrms
+6.8dBu
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)
   20Hz-20kHz: 10 dB below rated power
   1.0kHz and below: full rated power
Less than 0.01% THD @ 8 & 4 ohms
Less than 0.01% THD @ 8 & 4 ohms
Frequency Response
   (LF filter switched off)		 20Hz-20kHz, ± 0.2 dB
  8Hz-50kHz, +0/-3 dB
Damping Factor
   1 kHz and below		 greater than 500
Input Impedance 10k ohms unbalanced, 20k ohms balanced
Input Clipping 10Vrms (+22 dB)
Voltage Gain at 8 ohms 40x (32 dB)
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
Controls Front: AC switch, Ch. 1 and Ch. 2 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 19" (48.3 cm) rack mounting, 3.5" (8.9 cm) tall (2 rack spaces),
14" (35.6 cm) deep (from front mounting rails)
Weight 21 lb (9.5 kg) net
Optional Accessories
 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


CURRENT CONSUMPTION DCA1222 DCA1622 DCA2422 DCA3022 DCA3422
Idle current
(no audio program material)		 0.8A 0.9A 0.9A 0.9A 0.9A
1/8 Power (Pink Noise)
(typical of program material at
maximum unclipped or rarely
clipping power)		 8 ohms
4 ohms
2 ohms		 3.8A
6.0A
9.6A		 5.6A
9.0A
14.0A		 5.0A
7.9A
11.8A		 6.0A
9.5A
14.0A		 7.6A
11.6A
16.6A
1/3 Power (Pink Noise)
(typical of program material
with severe clipping)		 8 ohms
4 ohms
2 ohms		 5.4A
8.9A
14.3A		 8.0A
13.3A
21.0A		 8.4A
13.5A
22.0A		 11.0A
17.0A
27.0A		 13.1A
20.0A
30.4A
Note: values are for 120VAC; 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 ohm + 8 ohm
4 ohm + 4 ohm
2 ohm + 2 ohm		 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 ohm + 8 ohm
4 ohm + 4 ohm
2 ohm + 2 ohm		 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 ohm + 8 ohm
4 ohm + 4 ohm
2 ohm + 2 ohm		 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 ohm + 8 ohm
4 ohm + 4 ohm
2 ohm + 2 ohm		 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 ohm + 8 ohm
4 ohm + 4 ohm
2 ohm + 2 ohm		 225
225
225		 57
57
57		 1195
2135
3975		 300
540
1000		 1760
2335
5210		 445
590
1315		 2050
3755
NA		 515
945
NA


BAY AREA CINEMA PRODUCTS
1025 Pine Meadows Ct., Martinez, California 94553 Phone: 925-372-7603 Fax: 925-372-7658
E-Mail: BACP2000@AOL.com Web: www.BACPINC.com