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Old 15th February 2013, 12:02 AM   #1
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Join Date: Jun 2012
Default Load Resistance, etc., chart for Class A push pull 6L6s?

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?

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Old 15th February 2013, 12:07 PM   #2
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Might be something in here that would be of value ...
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Old 15th February 2013, 10:37 PM   #3
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Wow, great resource! Nothing on 6L6s but what a wealth on 6550s and related tubes. Maybe I'll end up going that way... thanks!
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Old 16th February 2013, 03:37 PM   #4
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Speaking of related ... the 6550 is in the 6L6 family so there should be some relevance.

Additionally, another site of value might be: Tubes
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