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digiamps.com
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Product Info |
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Concept Audio Production Røjlevej 8 5935
Bagenkop
www.cadaudio.dk info@cadaudio.dk Phone/Fax +45 38334048 |
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Digital / PWM Amplifier Modules |
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We present a comprehensive series of PWM /
Class-D Digital amplifiers designed to give very high performance in
audio quality and to deal with all aspects of amplifier use and
applications including amplifier + power supply combination,
multichannel use , channel syncronization , protection circuits , active
crossover use, etc.
They are all full bandwidth modules (20 Hz - 20 kHz+) and are very usefull for a broad range of applications from HIFI, Home Cinema to Pro Audio, Active Loudspeakers, Installation... Sound quality is very good indeed and THD + N is 0.02% or better. Signal/Noise ratio is typically 110 dB or better. The modules are protected against a variety of faulty conditions such as overload, overtemp., undervoltage, short circuit and are suited for a broad variety of applications including active loudspeakers, pro-audio, installations, high-end and high-power stereo and multi-channel audio. Our basic topology is a precision clock based design with overall feedback after the output filter , giving a very robust design combining very good specs with high audio quality, we present a couple of new modules using self-oscillating technology, a topology that gives a less complex amplifier and again very good specs and very good audio quality. |
Contents |
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Basic specs and features;
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D250A – 250W pwm amplifier module
D1000A – 1000W pwm amplifier modul
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| Modulation | analog PWM modulation | |
| Feedback type | after the output filter | |
| Clock type | precision clock | |
| Output Power | up to 2000W into 4 ohms | |
| THD+N | typical 0.01% | |
| Signal/Noise | +110dB | |
| Freq. response | 20Hz – 22kHz (-1 dB) | |
| Min. Load Impedance | 4 ohms nominal | |
| Power supply | 2x45V or 2x65V for A modules | |
| Power supply | 115/230V AC for ASW modules | |
| Efficiency | 85% or better for ASW , 92% for A | |
| EMI and EMC | very good | |
| Other specs | see graphs and datasheets | |
| Features: | balanced input(s) | |
| volume control connection | ||
| channel synchronization | ||
| preamp supply | ||
| led meter supply | ||
| soft start (no-thump) | ||
| overcurrent shutdown | ||
| over temp shutdown | ||