Class D clipping
D student -- Thu, 09/13/2007 - 07:27
I have a pair of homebuilt chip amps which are 60 or so wpc. Last night I finally heard some of the top end distortion folks are talking about.
I wonder if what I was hearing was clipping.
All I know is that I turned the volume down one notch, played the passage again, and the distortion in the top end was gone.
Thoughts, explanations?
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My Raptors have been trouble-free. The only time one of them blew a fuse was when connected to a friend's SoundLab M1, and the music had a very powerful bass note. I suspect the bass step-up transformer was saturating.
The sound got fuzzy right before it quit.
I think the discussion of top-end distortion relates to the design of the low-pass filters used in many switching amps. If these filters have a corner frequency that is too low, they cause phase problems in the upper end of the audio band.