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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

2722.0. "tech help needed for amp mod" by TUXEDO::SUDAMA (Living is easy with eyes closed...) Mon May 03 1993 19:32

    I want to get my amp modified so that the effects loop is active on
    only one of the channels. That way I can set up effects on one channel,
    plain on the other, and switch between them using the channel switching
    in the amp. I called Seymour-Duncan sometime back to ask about this
    mod, and they said it is possible to do. A local music store just
    quoted me $140, which seems pretty steep to me. I can't imagine that
    this is a real complicated mod, just rerouting a few wires.
    
    Does anyone know of a good tech in this area (greater Maynard) that
    could do this kind of thing for a reasonable price? Alternatively, is
    there anyone around with enough electronics experience to help me
    figure out how to do it myself? I have the schematics for the amp, and
    am handy with a soldering iron. I just don't know enough to be sure I'm
    doing the right things, and I don't want to blow up the amp (or
    myself).
    
    - Ram
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2722.1KDX200::COOPERLet The Light Surround You!!Tue May 04 1993 00:587
    Sounds like you need to talk to Jay Tashian (sp?) ?  He used to 
    note in here and his address is scattered liberally thruout
    the "Tubes, Tubes, Tubes" topic - I know a couple noters in 
    here have had some work done from Jay, perhaps they'd care to
    elaborate?
    
    jc
2722.2Will work for food ... or schematicsSUBSYS::GODINTue May 04 1993 11:4422
    I would be willing to do it, help you do it, or explain how. I've done
    numerous similar (& not so similar) mods over the years. I might want a
    copy of the schematic since I have a Seymour & no schematic. You're
    right about the quoted price, but these guys have to make a living off
    of everything they do. (Like auto mechanics).
    
    I don't know if Jay Tashjian is still around, but his address was
    published in another note as:
    Jay Tashjian.
    P.O. Box #189
    Worcester, Ma.  01602
    
    At any rate, this proposed mod is not rocket science, so if you show me
    a schematic, I can sketch how to do it. In fact this kind of thing can
    be easily done without a schematic.
    
    You may consider *adding* an effects loop for one or both channels, or
    putting in a switch so the loop can be selected to be either CH1, CH2,
    or both. That would be more work, but it's still simple & a little more
    flexible.
    
    Paul