> Anyone have any solutions to why these tubes are getting so hot?
I had the same problem with my external receiver audio amp. It uses a pair
of 6V6's in the output. I checked all voltages: filament, bias, screen and
plate, plus cathode current, and all were within spec according to the RCA
tube manual. Still the tubes ran super hot, and only lasted a few months
before they began to test weak. I increased the cathode resistance and
decreased the screen voltage, which dropped the cathode current
substantially. The tubes now run cooler, and so far, have not crapped out
prematurely. I have quite a few 6V6's on hand, but tubes are still scarce
enough that I can't afford to replace them every few months.
Don K4KYV
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