Mercury Epiphone Valve Junior - Tips for Alans Anti-Squeal Circuit Option

Epiphone Valve Jr.•Mercury Upgrade Kit 39
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thefurnishingofthesedocumentsdoesnotconstituteanexpresedorimpliedlicensetousesuchmaterials.
Tips ’n Tricks for
Alan’s “Anti-Squeal” Circuit Option
Jointheprovided47rFceramic
diskcapacitortothe220KW
resistorandjumpthemacross
pins6and7oftheV1socket
(12AX7)asshown.
Duetoqualityissueswith
someoftheChinesematerials
beingusedsome(butnotall)
Version3Valve Jr.ampswill
emita“squeal.”Ifyou’reone
oftheunluckyones,install
thisanti-squealoption.Refer
totheschematicsforspecic
connectioninformation.