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previous: Mike My 79 bassman 10 started acting fun... -- 10/2/2000 5:07 PM View Thread

Re: Feedback/Hum...

10/2/2000 5:40 PM
Re: Feedback/Hum...
Could be a microphonic tube somewhere. Turn the amp on and up a little bit, then one by one, tap on the glass of the tubes. It may make the noise worse or better. You may be able to narrow it down to one tube as being microphonic.  

Mike User-ERROR! -- 10/2/2000 5:50 PM