In Reply to: 300B overbias / underbias questions posted by Funky Bob on April 27, 2019 at 09:48:32:
If the currents you quote are correct, and the output power really is ~15W, the 300B tubes are being run at what I would call high dissipation. Running bias at 170mA means that the dissipation is being increased further... and I suspect reducing tube life considerably.
Cheers,
91.
"Confusion of goals and perfection of means seems to characterise our age." Albert Einstein
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Follow Ups
- RE: 300B overbias / underbias questions - 91derlust 04/27/1914:44:03 04/27/19 (4)
- RE: 300B overbias / underbias questions - Funky Bob 17:57:32 04/27/19 (3)
- RE: 300B overbias / underbias questions - 91derlust 21:09:54 04/27/19 (2)
- RE: 300B overbias / underbias questions - Funky Bob 01:24:33 04/28/19 (1)
- RE: 300B overbias / underbias questions - 91derlust 20:06:50 04/28/19 (0)