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Conference napalm::guitar

Title:GUITARnotes - Where Every Note has Emotion
Notice:Discussion of the finer stringed instruments
Moderator:KDX200::COOPER
Created:Thu Aug 14 1986
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:3280
Total number of notes:61432

2388.0. "Feedback problems - help!" by YUPPY::HARVEY (Ralph Harvey, Central London) Fri Nov 29 1991 08:39

    Hi All,
    
    A little question for all you Gibson Les Paul owners out there (or
    electronics wizzes!)
    
    I've always had problems with feedback from my Gibson Les Paul standard
    (a fairly modern model '88 I think). Traditionally I've used this via
    a BOSS ME5 effects pedal and Fender Studio 85 amp.  I'd assumed that
    there was some incompatibility between systems and this led me to the
    search for a new sound/amp set up. (after all, nothing  could be wrong
    with the Les Paul right?) Well wrong!  Last night one of my colleagues
    kindly brought around his Marshall 9000 set up for me to try out and
    lo and behold, at any serious volume through the lead channel - awful
    feed back.  
    
    This is a shame since I was seriously considering a Marshall / Boogie
    combination, but now I'm not so sure...
    
    This problem does not occur either on his Fingerbone custom guitar or
    my Yamaha SE350 with EMG pickups.  Does anybody have any ideas, advice,
    guidance of this?  The local shops around here (i.e. tin pan ally)
    don't have a clue.
    
    Thanks in advance for any help.
    
    -Ralph-
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2388.1What sort of feedback?MVSUPP::SYSTEMDave Carr 845-2317Fri Nov 29 1991 09:415
Ralph,
Is it a high pitch squealing noise like you'd get from a microphone, or
is it the sort of feedback you'd expect from a guitar? Those humbuckers
are pretty high gain (a *lot* more powerful than single coil)...
Does it only happen if you're standing very close to the amp?
2388.2wax them suckers?TOOK::SUDAMALiving is easy with eyes closed...Fri Nov 29 1991 13:178
    It sounds like one (or both) of your pickups may be  microphonic. I had
    similar problems with my ES-345 until I waxed the pickups. Now it never
    feeds back. There's a note way back when someplace in here that
    discusses waxing pickups, in which I describe the procedure in some
    detail. If you're less foolish, you can probably find someone to do it
    for you.
    
    - Ram
2388.3pot 'em!WOLVER::SDANDREATrials BulldawgMon Dec 02 1991 13:397
    My LP Deluxe is a "feeder-backer" too!  I never "potted" the pickups,
    but I've been told that is the fix....."pot" 'em :== wax coating.
    
    I believe there is a short discussion on potting pickups in the 
    "Chronology of the Les Paul" note....
    
    Steve
2388.4KDX200::COOPERStep UP to the RACK !Mon Dec 02 1991 16:244
Agreed.  Pot 'em or replace 'em with some sort of cool new (tech-wise)
pickup...  Who's LP with Seymour Duncans didn't squeel a bit.

jc