[Amps] The Pin One Problem is NOT Common Impedance Coupling

[Roger Parsons]

Jim Brown has ridiculed my suggestion that the 'Pin 1' problem is a subset of  the 'Common Impedance Coupling' problem. Strangely enough, this has not best pleased me, and I have in no way changed my opinion.

Jim now categorically states that  "The Pin One Problem is NOT Common Impedance Coupling".

In 2003 Jim presented a paper entitled " ... Common Impedance Coupling (the "Pin 1 Problem") ... ". 

One or both of these positions are incorrect. Perhaps Jim could do me the courtesy of explaining which?

73 Roger
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