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Post subject: Blues Junior Oscillation Problem
Posted: Thu Feb 21, 2008 7:22 am
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Joined: Wed Jul 18, 2007 4:25 am
Posts: 15
My NOS Lacuered Tweed Blues Junior is producing a high frequency oscillation.If I turn the treble down I can get rid of some of it but my tone turns muudy at the same time.I have done some of the BillM mods to it.The twin stack mod,tone stack mod,single pot adjustable bias and an extra filter cap in parallel with the original.New JJ EL 34's,a 12AT7 PI tube and 2 TungSol 12AX7's.I adjusted the ribbon wire from the phase inverter as prescribed by Dr Bill.What do I try next?


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