• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Load Resistance, etc., chart for Class A push pull 6L6s?

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tapehead ted

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Joined 2012
I'm just learning how to use these charts- trying to find the right output transformer for an amp I'm working on. I have a chart from the GE 6L6 datasheet for push pull Class AB, two tubes, 450v plate voltage and one for Class A, 250 volts plate voltage- I am deriving from the values involved that the Class A chart is for a single ended amp, one tube.

Anybody know where to find a more suitable chart- or any clues on how to interpolate relevant values for push pull Class A from these charts?

Also my plate voltage may be a bit higher than 250v- but nowhere near 450v- how do I compensate for that?

And how do I compensate for using 4 tubes instead of two?

Thanks,
Ted
 
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