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  #42  
Old 08-19-2010, 08:56 PM
DaveWM DaveWM is offline
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Join Date: Feb 2009
Location: Orlando FL
Posts: 5,607
its goofy. I put in a signal 400hz into the left channel thru the phono, then I scope the base of the left transistor and compare to the base of the right. WTF the signal is about 1/3 the Left.

there is a network of resistor that connect the two bases togehter on mine its a 56k/22k/56k. I removed the transistors from the sockets and check the resistance, total was about 160k which would make since after accounting for drift there was nothing else in the circuit but for the disc coupling caps.

I dont know why this would be the case, but I can clearly see the 400hz on the base and of course the collector of the right channel.

I wonder if there would have been any reason to tie the two channes together?
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