Push Pull Pot for treble bleed?

Discussion in 'Luthier's Guitar & Bass Technical Discussion' started by KeithC, Feb 5, 2012.

  1. KeithC

    KeithC Silver Supporting Member

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    Would this work? Use one to replace a tone pot on a Strat so you could effectively turn "on and off" your treble bleed mod.

    I've never used a PP pot so I'm not sure how you would wire it.

    I am assuming hook one leg of your treble bleed kit to one of the lugs on your volume pot like normal...then run a wire from the other end leg of your treble bleed kit to some lug on the PP pot and then a wire from some other lug on the PP pot to complete the circuit to you other normal leg or spot on your volume knob.

    It would be nice to be able to just turn it on and off for testing or just a change of my mind.
     
  2. KeithC

    KeithC Silver Supporting Member

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    Been rethinking how this might work.

    The extra 6 lugs on a PP pot are like this

    1 2
    3 4
    5 6

    3 and 4 are common. So if I take 2 wires from one lug of the volume pot and hook them to 1 and 5 and then hook 2 wires from the other lug on the volume pot to 2 and 6 and then wire the treble bleed kit between 5 and 6 it should work?

    Pull the knob up and it turns 1,2,3 and 4 off and turns on 2,3,4 and 5 which would put the treble bleed in the circuit....I think?

    I just need someone that understands this better to confirm if that's how they work and if I'm thinking it through properly.

    Thanks
     
  3. Tone_Terrific

    Tone_Terrific Member

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    All it takes is 1 simple break in the wire of the treble byapass leg, just a spst switch or the use of only 2 connection of a multi-switch.
    Find a knurly knob as strat knobs are way slippery in pull mode.
     
  4. KeithC

    KeithC Silver Supporting Member

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    I'm not exactly sure what you mean on this. I am pretty ignorant when it comes to anything other than standard Strat wiring.

    I definitely don't want to add any extra switches so I thought a push pull would do it. I'm just not 100% sure my idea of how to wire it is right.
     
  5. fumbler

    fumbler Member

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    All you need is one side of the switch. You simply wire the treble bleed cap/resistor from the input lug of the volume pot to lug 3 of the switch and then lug 5 of the switch to the output (middle) lug of the volume pot. (Or maybe use lug 3 and lug 1 depending on if you want the mod to be on when the push/pull is up or down.)

    +1 on that. Split-shaft pots want a push-on knob. Solid-shaft pots want a set-screw knob. Make sure you know whether the shaft is metric or imperial size, too.
     
    Last edited: Feb 6, 2012
  6. KeithC

    KeithC Silver Supporting Member

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    That I can understand! I was making it too complicated but I really don't know how a push pull pot works electronically speaking. But I see by doing it that way you are either completing or breaking the connection of the treble kit.

    Thanks!
     
    Last edited: Feb 6, 2012
  7. fumbler

    fumbler Member

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    A simple multi-meter and 2 minutes of fooling with the switch is all you need.
     
  8. LarryOM

    LarryOM Guest

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    The JS1000 has the switch on the volume pot but it's basically the same thing.
    [​IMG]
     
  9. KeithC

    KeithC Silver Supporting Member

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    Thanks to all. Fumbler your instructions worked perfectly. I kept with my original idea and used the PP pot as a tone pot.

    Wired up and it works as advertised. Quick pull or push of the knob and it takes out or puts in the treble keeper kit.

    The reason I did it is I was always going back and forth on whether I liked it or not and as we all know it's a hassle on a Strat to pull the whole guard and rewire it.

    A couple observations from being able to immediately switch back and forth.

    First, there is no doubt that on 10 on guitar volume there is NO difference.
    The biggest eye opener is the actual increase in output when rolled back below 7-8 on the volume knob. Not just a treble or brightness change but more output with the circuit engaged when below that 7-8 spot on the volume.

    Practice tomorrow night and I'll really give the differences a try.

    It was easy (with TGP help!) and to me a good idea if you are on the fence or really want to A/B the difference for your self in real time.

    Thanks for the help TGP
     
  10. Tone_Terrific

    Tone_Terrific Member

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    You can fine-tune the brightness, feel/response and level with cap choice, and using a resistor in series or parallel...endless fun, esp with a strat (oy!) run some wires out and use clips if you must experiment.
     

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