Qsc - Dca4Ch 电路图.pdf

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1、D I G I T A L C I N E M A P R O D U C T S P r e l i m i n a r y S p e c i f i c a t i o n s 4-channel4-channel The latest advances in sound system technology such as Dolby Digital SurroundEX and tri-amplification require more amplifier channels than ever before. Thats why we designed our newest DCA

2、amplifiers to give you four channels of power in a compact package that doesnteat up precious rack space.And,comparedto the cost of two stereo amplifiers, youll find they leave more room in your budget as well. In addition to their superior performance weve packed these amps with useful features des

3、igned specifically for the cinema market. The DCA 1824 is ideal for surround channels each channel can power up to four 8speakersin parallel for a total of up to 16 speakers. The DCA 1644 is perfect for powering screen channels in small to medium theatres,or for powering mids and highs in tri-amp sy

4、stems for larger theatres. DCAs are equipped with a DataPort for use with QSC DCMDigital Cinema Monitors,a total system solution that greatly reduces labor inputs parallel or stereo; bridge mode Continuous Average Output Power Per Channel 4 ohmsFTC20 Hz20 kHz 0.1%THD 4 ohmsEIA1 kHz 1% THD 2 ohmsEIA

5、1 kHz 1% THD Signal to Noise (20 Hz20 kHz) Input Sensitivity 8 ohms Input Sensitivity 4 ohms Input Clipping Voltage Gain (full rated output) Bridge Mono Mode 4 ohmsEIA1 kHz 1% THD 16 ohms FTC20 Hz20 kHz 0.1% THD 8 ohms FTC20 Hz20 kHz 0.1% THD Not Rated 400 Watts 450 Watts 800 Watts Not Rated 500 Wat

6、ts -105 dB 1.12 Vrms 1.00 Vrms 10 Vrms (+22 dBu) 40 x (32 dB) 450W 250 Watts 500 Watts 900 Watts 340 Watts -105 dB 0.93 Vrms 0.80 Vrms 10 Vrms (+22 dBu) 40 x (32 dB) Continuous Average Output Power * 120 VAC, both channels driven;multiply current by 0.5 for 230V units FTC:all channels driven EIA:one

7、 channel driven (0.1% THD 1 kHz) PWR-ON:Green LEDLEVEL -20 dB:Green LED (1 per channel) BRIDGED:Yellow LED (1 per pair of channels)LEVEL -10 dB:Green LED (1 per channel) PARALLEL INPUTS:Yellow LED (1 per pair of channels)CLIP/PROT:Red LED (1 per channel) SIGNAL -35dB: Green LED (1 per channel) Outpu

8、t Circuitry Power Requirements (1/8 power pink noise) AB+B 14A 4 ohms Less than 0.01% AB+B 10A 8 ohms Less than 0.01%Distortion (SMPTE-IM) Distortion (typical) Frequency Response Damping Factor (1 kHz and below) Input Impedance 20 Hz-20 kHz:10 dB below rated powerLess than 0.02% THD, 4 & 8 20 Hz20 kHz, 0.2 dB / 8 Hz50 kHz, +0, -3 dB greater than 500 10 K unbalanced, 20 K balanced All modelsAll models 1.0 kHz and below:full rated powerLess than 0.02% THD, 4 & 8 DataPort: One HD15 per pair of channels RadioFans.CN 收音机爱 好者资料库