Pickups with independant volume controls

Discussion in 'Pickups & Electronics [BG]' started by Olioop, Apr 21, 2020.

  1. Olioop


    Jan 14, 2020
    I'm building a bass that will use volume controls for each pickup , and there is one aspect of this that I don't quite get. People seem to use 250k pots , and if you are then going into a valve preamp with a 1m grid leak resistor , it is in parallel with the pots and the combined grid leak resistance comes down to 125k even with a 10m leak resistor.
    Which should be too small. Or maybe I've got something wrong?
  2. Jazz Ad

    Jazz Ad Mi la ré sol

    Yeah you forget the impedance from the pickups.
  3. Olioop


    Jan 14, 2020
    Thanks for the reply , can you say what that would do to the value mathematically , for a typical pickup value?
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