JCM800 Mods

Discussion in 'The Workbench' started by a2dconverter, May 22, 2009.

  1. a2dconverter

    a2dconverter New Member

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    Howdy Folks

    I'm new here, but have been using Marshall since the 80's

    Here's some pictures of my rig

    The JCM800 Mods are:
    adjustable bias control/ test points,
    preamp - power amp loop,
    custom white speaker board and black perforated steel grille

    Let me know if you have any questions

    seeya

    Joe

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  2. twistudriffer

    twistudriffer New Member

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    digging the backdrop bro! :dude:

    hey did you do the custom work on your grills? cheers
     
  3. kharvelan

    kharvelan New Member

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    thats a sweet rig!
     
  4. American Viking

    American Viking Well-Known Member

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    the bias control feature looks pretty cool, but at the same time, where are you able to check plate voltage? isn't that going to change every time you change tubes thus changing your overall bias?
     
  5. a2dconverter

    a2dconverter New Member

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    Hey Viking...

    When installing new tubes I have to crack the chassis to check the Vp, but the TP's allow me to see if things are changing between power tube sets.

    cheers

    Joe
     

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