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previous: Carl Z Mark;That's an inte... -- 8/3/1999 4:36 AM view thread

Re: First question for the new bbs

8/3/1999 4:08 PM
Gil Ayan
Re: First question for the new bbs
quote:
"I'm not exactly seeing how unshielded heater wires would cause motorboating."
 
Well, Carl, it sounds unusual to me, but if Marshall says it's a fairly common problem with their amp's so it must be. What would happen is that the filament windings may radiate soem 60Hz stuff that gets in there somewhere and modulates the audio signal with that low frequency pulse, and hence the motorboarding.  
 
Gil

 
Replies:
Farrow Marshall heater wire -- 8/3/1999 5:30 PM
Carl Z Re: First question for the new bbs -- 8/5/1999 3:57 AM