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Re: Under-Biasing Output Tubes [message #71879 is a reply to message #71705]

Thu, 22 March 2012 14:30

SASAudioLabs
Messages: 17
Registered: May 2009

Chancellor

I have found that as the idle current lowers from class A towards class B, at some point the sound will start to be perceived as leaner.

With that said, class AB is not a problem if one biases towards descent values, not close to class B.

From .45 to .43 is most likely a couple of ma, and is not going to make any difference in longevity. However, I would check the sonics and see if .5 or higher would be perceived differently with the KT-88s. Set for the best sound. (Always be sure the power tranny does not overheat.)

Cheers.

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[Message index]

		Under-Biasing Output Tubes By: AudioFred on Fri, 09 March 2012 08:04
		Re: Under-Biasing Output Tubes By: Wayne Parham on Fri, 09 March 2012 09:39
		Re: Under-Biasing Output Tubes By: SteveBrown on Fri, 09 March 2012 17:39
		Re: Under-Biasing Output Tubes By: Thermionic on Sun, 11 March 2012 01:31
		Re: Under-Biasing Output Tubes By: AudioFred on Mon, 12 March 2012 04:59
		Re: Under-Biasing Output Tubes By: gofar99 on Wed, 14 March 2012 13:40
		Re: Under-Biasing Output Tubes By: SASAudioLabs on Thu, 22 March 2012 14:30
		Ella with EL34's By: spkrman57 on Sun, 22 July 2012 12:48

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