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Old 20th March 2016, 06:50 PM   #1
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Talking 300B Bias?

I have My TSE singing. My B+ is 370 volts. I am using Electraprint 3.5K output transformers. What would be the ideal bias setting for 300B tubes?
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Old 20th March 2016, 11:12 PM   #2
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That would depend on the particular type, manufacturer and actual tube.

The nominal value can be determined by the actual current reading(s) for the tubes and the mfrs ratings and curves.

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Old 21st March 2016, 03:18 AM   #3
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I used FFT analyzer chart to get the lowest amount of distortion and my Chinese made Valve Art 300B tubes are set at 68mA and B+ at 370V. Sounds fine.
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