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In Reply to: OLSON AA235 INTEGRATED TUBE SCHEMATIC posted by LORDGARTHSUTEKH on August 21, 2004 at 12:35:59:
These were made by Matushushita/Panasonic and are quite standard circuits and easy to follow.
First thing you should do is to replace all coupling caps. I had an Olson with two 6BM8 (triode-gain,triode phase splitter, pentode push-pull) and it sounded awful. I measured voltages and found DC on the grids, which were supposed to be biased to ground.
Those coupling caps were leaking big time!
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