10-13-2026, 10:01 PM
Hello Mr. Radio-Man,
Based on what I read in the tube data sheet, I would use Red and Blue for the primary and Black and Yellow for the secondary.
Yes. For a single-ended 6F6G output stage, the datasheets specify an optimum load of about 7,000 Ω plate-to-voice-coil impedance at typical operating conditions.
An 8,000 Ω primary output transformer is close enough that it will work very well with a 6F6G. In fact, many vintage radios used transformers in the 7 kΩ to 8 kΩ range.
Hope this answers your questions
Richard
Based on what I read in the tube data sheet, I would use Red and Blue for the primary and Black and Yellow for the secondary.
Yes. For a single-ended 6F6G output stage, the datasheets specify an optimum load of about 7,000 Ω plate-to-voice-coil impedance at typical operating conditions.
An 8,000 Ω primary output transformer is close enough that it will work very well with a 6F6G. In fact, many vintage radios used transformers in the 7 kΩ to 8 kΩ range.
Hope this answers your questions
Richard
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