Anyone Here Put The Bias Trim Pot On The Outer Back Of The Chassis?

Discussion in 'Building the Classics' started by Rick Lee, Feb 8, 2017.

  1. Rick Lee

    Rick Lee Active Member

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    Will try to get a clip up soon, but it's not coming out of the headshell again for a little while. I want to log some hours on this amp before deciding if it needs to be modded to get to a lower voltage with the Variac switch. I'm not real happy with the headshell, an eBay score that was not well photographed or described. Might get another one.
     
  2. fusionbear

    fusionbear Member

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    Here is my JTM45/100 inspired build with the Bias pot in the back:

    [​IMG]

    May get a locking one later....
     
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  3. Gblev

    Gblev Active Member

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    Here's what you need for the bias trim pot:

    wp253l-slot.jpg

    https://www.tedweber.com/wp253l-slot

    EDIT: That's actually a pic for a 50k, but the link is for the 25k and it looks the same as the one in this pic. I believe these are locking and you need a screw driver to turn them. I'm actually getting ready to do this mod to my 2203.
     
    Last edited: Feb 25, 2017 at 4:55 PM

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