From Wikipedia
"Class D amplifiers have been widely used to control motors, and almost
exclusively for small DC motors, but they are now also used as audio
amplifiers, with some extra circuitry to allow analogue to be converted to
a
much higher frequency pulse width modulated signal. The relative
difficulty
of achieving good audio quality means that nearly all are used in
applications where quality is not a factor, such as modestly-priced
bookshelf audio systems and "DVD-receivers" in mid-price home theater
systems."
"jamesgangnc" <james@[EMAIL PROTECTED]
> wrote in message
news:13s6so0o3qqg69@[EMAIL PROTECTED]
>> Surprisingly, these surround receivers actually do put out 100 watts
RMS
>> each for all 5 channels concurrently, or 85 watts RMS each for 7
>> channels concurre
>
> If one of those cheap surround sound recievers is putting out 500 watts
> rms then I'm betting it's a class d amp. And that's why the distortion
> figures suck.
>
> A good class ab amp will list continuous rms watts for 8 ohms and 4 ohms
> with .1 thd or lower.
>
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