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'load lines for dissimilar output tubes?'
Author:tapehead ted (registered user: 6 posts )
Date: Sat, Mar 18th, 2017 @ 13:59 ( . )

FWIW the amp I initially heard and played this combination of tubes with had an unusual bias scheme that guaranteed that at all times the bias voltage was identical with all four tubes. That all broke up very nicely together.

With my loadlines as best I can figure them, the two tubes transition into class B at a similar place, if not exactly at the same moment. I've figured this out at 108, 120 and 125 VAC mains voltages, optimizing for 120 VAC but keeping things workable at the extremes.

Thanks everyone very much for a very rewarding discussion!

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--* load lines for dissimilar output tubes?
3/19/2017 @ 19:31--tapehead ted

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