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Re: diy otl

I did 3 of my own design (unfortunately, 2 of them developed power supply problems perhaps because I wound my own 1400VA toroids & I suspect one may have developed an interwinding short (not a good thing in a transformer that size) & the other may have had its 'cool' turn on circuit crap out - haven't found time to fix those two yet but still running my original prototype for 16 years now - showing the amp topology itself is sound. My design is fully balanced & dc coupled (by this I mean you put dc at the input, you'll get a steady dc at the speaker terminals relative to the ground return). No servos, output stabilized by feedback, only solid state devices are in the power supplies (rectifiers & turn on circuit).


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