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Q-SYS DCA1644 4 Channel Power Amplifier – 250W

$98.00 $1,821.99

The DCA 1644 is a DCA series digital cinema amplifier provides latest advances in sound system technology such as Dolby Digital Surround-EX and tri-amplification require more amplifier channels than ever before. This newest DCA amplifier gives four channel

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The DCA 1644 is a DCA series digital cinema amplifier provides latest advances in sound system technology such as Dolby Digital Surround-EX and tri-amplification require more amplifier channels than ever before. This newest DCA amplifier gives four channels of power in a compact package that doesn’t eat up precious rack space. In addition to their superior performance we’ve packed these amps with useful features designed specifically for the cinema market. With PowerLight technology, DCA amplifiers take your soundtracks to a whole new level. Not only does it give your music bigger bass and cleaner highs, PowerLight also cuts wasted heat and boosts reliability. PowerLight is a switching power supply that provides ample current to the audio power circuitry by charging the supply rails 230,000 times a second through an ultra-low impedance circuit, so unlike high-powered amps with conventional supplies, the audio signal is never starved prematurely, but remains crisp and clean. It virtually eliminates hum and greatly reduces noise, providing a vast dynamic range that can handle the most demanding digital soundtracks without running out of headroom. DCA series amps also boast a set of useful features such as individually selectable clip limiters and subsonic filters and stereo, parallel, and bridged mono operation.

Features

  • The DCA 1644 is perfect for powering screen channels in small to medium theatres, or for powering mids and highs in tri-amp systems for larger theatres.
  • DCAs are equipped with a DataPort for use with DCM/DCP – Digital Cinema Monitor; Digital Cinema Processor, a total system solution that greatly reduces labor & wiring costs.
  • Compact size (2-RU, 14-inch deep) ideal for use in console-mounted sound systems
  • All models weigh only 21 pounds, for easier racking and shipping.
  • Active Inrush Limiting won’t blow circuit breakers at turn-on.
  • Gain control security cover protects amp from misadjustment.
  • 3 year warranty plus optional 3 year extended service contract!

Specifications

SPECIFICATIONS DCA 1644
8, 20 Hz20 kHz, 0.05% THD

Continuous Avg. output per channel

250 W

4, 20 Hz20 kHz 0.1% THD 400 W (1 kHz)
EIA: 1 kHz, 1% THD @
4
2
450 W
not rated
BRIDGED MONO MODE
16, 20 Hz20 kHz, 0.1% THD 500 W
8, 20 Hz20 kHz, 0.1% THD 800 W (0.1% THD, 1 kHz)
4, 1 kHz, 1% THD not rated
Signal to Noise
20 Hz20 kHz, unweighted
– 105 dB
Input Sensitivity
full rated power @ 8 ohms
1.12 V rms
Input Sensitivity
full rated power @ 4 ohms
1.0 V rms
Output Circuitry Class Type AB+B
Distortion (SMPTE-IM) < 0.01%
BOTH MODELS
Distortion (Typical)
20 Hz20 kHz: 10 dB below rated power
1.0 kHz and below: full rated power
Less than 0.02% THD @ 8 and 4 ohms
Less than 0.02% THD @ 8 and 4 ohms
Frequency Response
(LF filter switched off)
20 Hz20 kHz, 0.2 dB
8 Hz50 kHz, + 0, -3 dB
Damping Factor 1 kHz and below Greater than 500
Input Impedance 10 k unbalanced, 20 k balanced
Input Clipping 10 V rms (+22 dBu)
Cooling Variable-speed fan, rear-to-front air flow
Connectors, each channel Input: 3-pin detachable terminal blocks
Output: Safety-shrouded barrier strip, including monitor outputDataPort: One HD15 per pair of channels
Voltage Gain at 8 ohms 40x (32 dB)
Controls Front: AC switch, Ch. 1,2,3 and 4 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 ON: 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

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