Thanks, Alain,for your response.
Ultimately the problem was C524: Among the original faults in this amplifier was leakage in C524, I substituted a 270 pF, 400 WVDC cap and this was a mistake. The extra 70 pF was enough to introduce an instability, though what mode I haven't and needn't determine.
Now I need to figure why I now have a 185 mVDC offset in one channel, in Stereo mode only...
AC4AQMember Since 01 Oct 2012
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17 Apr 2014 - 08:12
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