Turn taper pot into linear pot?

Discussion in 'Tape Recorders' started by Guitarfreak, May 27, 2010.

  1. Guitarfreak

    Guitarfreak Well-Known Member

    Joined:
    Feb 21, 2009
    Fix for a Linear taper Pot

    This site says that you can turn a linear pot into a taper pot by adding a resistor between the wiper and ground. Is it possible to emulate this the other way around? I have a taper tone pot and rather than replace the pots I'd like to know if I can mod them to be more linear in their response.
     
  2. Boswell

    Boswell Moderator Distinguished Member

    Joined:
    Apr 19, 2006
    Location:
    UK
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    You can't turn a linear law into a log law or vice versa by adding a resistor. All you can do is bend the existing law a bit.

    It's easy to make an Excel spreadsheet showing the resistance values and graphing them so you can see just how bad the result is.
     
  3. Guitarfreak

    Guitarfreak Well-Known Member

    Joined:
    Feb 21, 2009
    Thanks. Oh, I know, I am just looking to get closer.
     
  4. Guitarfreak

    Guitarfreak Well-Known Member

    Joined:
    Feb 21, 2009
    Hmm, I tried a resistor between the wiper and the unused lug of the tone pot just now and rather than flatten out the sweep all it did was make the cap do next to nothing. Maybe I should have tried it between the wiper and the back of the pot or something, but I'm done meddling with it tonight.
     

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