peterw;499501 Wrote: > They're sending digital signals from the amplifiers to the speakers??? Basically that's how it works, yes. The amplifier outputs an oversampled, pulse width modulated, digital signal, which is then fed directly to the speakers through a low pass filter that eliminates the clock frequency. It's the same principle that is also used in switching power supplies, except that a power supply is designed to deliver a constant voltage, while a D-amp is designed to deliver audio signals.
The advantages are that such an amplifier has a very high power efficiency factor, and that you don't have a traditional DAC that might theoretically cause nonlinearities. The disadvantages are that you need an extremely stable power source because every hum, ripple, noise, or voltage drop is immediately superimposed on the output signal, and that a switching amplifier creates HF noise similar to a switching power supply. -- usch ------------------------------------------------------------------------ usch's Profile: http://forums.slimdevices.com/member.php?userid=33389 View this thread: http://forums.slimdevices.com/showthread.php?t=73069 _______________________________________________ discuss mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/discuss
