wiring diagram 2 pickups 3 volume 1 tone

Discussion in 'Pickups & Electronics [BG]' started by shaun compton, Dec 18, 2014.

  1. shaun compton

    shaun compton Guest

    Dec 18, 2014
    im rebuilding a p/j bass and i would like to wire it so that i can control the volume of the 2 pickups individually with a concentric pot and have a master volume and a master tone if someone could help me out with a wiring diagram i would appreciate it i tried searching google
  2. Matthijs

    Matthijs Supporting Member

    Jul 3, 2006
    Why the seperate mastervolume? A concentric pot is very handy in that you can dial both controls simultanious. So one concentric pot or a blend/vol combination would make more sense.

    That said: you can use a schematic for a standard two pot cicuit and just add another pot at the end. Best use 500k pots, because with 250k pots the impedance would be too low.
  3. shaun compton

    shaun compton Guest

    Dec 18, 2014
    well i ring out my bass and turn down while my lead guitarist does a little solo and i feel like it would be easier to have one master volume to turn down instead of turning down both seperate volumes, and the concentric pot i would use for the seperate pickup volumes in cases where i might want lets say 100 percent p volume and 75 percent j volume or whatever
  4. The concentrics I have used are tight enough that when you turn a knob they both turn at the same time. If you have one set to 75% it will remain 75 %. If it doesn't track with the other knob try loosening the knob and push it to where it touches the bottom 1/2 of the concentric knob.
  5. iiipopes

    iiipopes Supporting Member

    May 4, 2009
    If you play like most do, and actually balance your pickups so the P is dimed and the J is rolled off somewhat, you get the same effect by simply rolling off the P pickup a couple of numbers, and you don't need a master volume.

    If you play everything dimed, and really want a MV setup, you can use diagrams like the Epiphone "Kat" series that have MV, 2-V & T controls as a source.

    The other option, much cheaper than modding a bass, is a volume pedal between the bass and whatever you plug it into.
  6. Take this diagram and remove the capacitor, and then throw in a tone pot parallel to the connection on the first terminal of every pot.
  7. ctmullins

    ctmullins Dominated Gold Supporting Member

    Apr 18, 2008
    MS Gulf Coast
    I'm highly opinionated and extremely self-assured
    You can certainly wire things the way you've described, and it will work fine, but it's electrically equivalent to a Volume/Blend/Tone circuit, which is far more ubiquitous and well-understood. Only thing is to make sure you get the right kind of blend pot - the kind where both volumes are at 100% in the center - I think it's called an M/N pot? Others please correct me...

    Seymour Duncan has good wiring diagrams on their site. This is the V/B/T diagram: