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RE: OTL amps don't rule, they're HOT! :-)

I converted my old Atma-sphere MA240s to run four 7241s per monoblock, instead of six 6C33Cs per monoblock. Since the 7241 can handle even more current than a 6C33C, there is no loss of power, but I expected the amps to run no less hot, because the 7241s also suck up filament current. Yet, surprisingly, the modified output stage runs notably cooler.

That Joule monoblock would be intolerable in most rooms during a hot month in the DC area, where I live. I can only imagine the heat of 24 6C33Cs in any normal size room, assuming the amp in your photo is one of a stereo pair.


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  • RE: OTL amps don't rule, they're HOT! :-) - Lew 11:32:22 07/23/14 (0)

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