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RE: 300B overbias / underbias questions

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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