Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Diverted on March 29, 2024, 09:46:29 am
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Hi,
A friend of mine recently heard a new amp by Little Walter, the Earl. It's apparently a SE 6V6 amp that produces 8-10w. My question is, how can a single ended 6V6 put out that much power? You mostly hear about amps w/that tube in the 4-6w range. Just curious if anyone has any insight in getting that kind of power out of a 6V6. Thanks.
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it's all in the measurements n perceptions
4-6WacRMS is ~~~~8-10W acP-P
a speaker in the 100-102dbSPL range will appear much louder than an 88-90spl.
I build a pp class-A..ish 23W rms, NONE of the guitarist believed me, even when I did the math for them, they all swore it was a 40W amp.
it was run through a 2 X12 with high 90s SPL. I had them plug it into a single 12 88ish SPL, they heard the difference, still said "OK, it's 35W"
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It's not hard to get 10 watts from a SE amp using a 6L6GC tube, you just need enough B+ voltage, and the proper output transformer primary rating.
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Correct. I’ve built a few SE 6L6s.
I was asking about an amp that supposedly gets 8w out of a 6V6, which seems like a stretch.
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At what distortion???
An amp that makes 5.7 Watts "clean" may make 11.4W horribly squared off. Guitarists do play that way.
It is also how Pete Traynor measured when he didn't know any better and did not have a 'scope or THD meter. Use an analog needle-meter, crank until the output doesn't get bigger.
Is anybody actually buying these things for a specific electrical power? That's how I pick a generator, but audio is more complicated than lights or pumps.