Quote:
Originally Posted by AlanInSitges
Yeah it seems like R47 should provide cathode bias on its own. I'm perfectly happy if the correct answer here is "it's a mystery", I mostly wanted to be sure it wasn't something that should have been obvious to me.
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R47 appears to be only a minor contributor to the cathode bias of the 6L6 output tubes, the lowest resistance path to ground for the 6L6 cathode current appears to be through the series connected heaters of V1 and V2 (12AX7s) through connection “Z”.
jr