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P Bass series-parallel switch?

Discussion in 'Pickups & Electronics [BG]' started by frits51, Nov 18, 2012.

  1. frits51

    frits51 Supporting Member

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    Hi, everybody.

    Using info and schematics I found here, I installed a series-parallel switch (push-pull on the vol knob) on my MIJ Jazz and wow, what a difference! New sounds available.

    I now own a P bass as well. I'm installing Bill Lawrence's P46 pickup, CTS pots and tone cap switch per this TB thread - http://www.talkbass.com/forum/f38/multi-capacitor-tone-control-737912/

    Wondered if series-parallel switching would get me anything.

    I don't have any sound in particular I'm looking for.

    Anybody done that to a P bass before?

    Thanks.
  2. walterw

    walterw Supportive Fender Gold Supporting Member

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    meh.

    on a J, series gives a big fat boost and a new, chunky sound.

    on a P, parallel just gets you the same sound but weaker.

    the one exception i've run into is with super-hot pickups like the dimarzio split P, where each side is itself a little humbucker; that one sounds great in parallel, almost as strong but a lot clearer.
  3. frits51

    frits51 Supporting Member

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    Thanks Walter!

    That's all I needed to hear.

    Mark
  4. JTE

    JTE Supporting Member

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    I had my Jazz Bass Special (P/J bass) wired with a S/P switch on the P coils, using Duncan Quarter Pounders. Switching the P coils to parallel worked nicely with the J coil, but I never cared for it with the P coils soloed.

    When I went to a Duncan Steve Bailey preamp, I discarded the S/P switching.

    John
  5. bassbenj

    bassbenj

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    I'm still using the S/P on my P/J but I agree with the above only being perhaps a bit less impressed with it. I put in looking for new tones, but really never found anything I liked. It's still there but basically never used. So all I can say is what JTE said.
  6. soulman969

    soulman969

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    I'd tend to agree with Walter. Wiring a JBass for series makes some sense as far as adding some tonal options but when you wire a PBass for parallel I think you're subtracting rather than adding.

    Those split coils in series in the "sweet spot" are almost all of what makes it what it is.
  7. Angel LaHash

    Angel LaHash

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    well i was thinking of making adding a Jazz/MM pick up to my P-Bass
    i know the pickups are a lot differnet and was told not to mix them as too much out
    Maybe put in a 2P2T (on-on-on) or a 3way switch .

    i got another filter switch to make tho i am a bit scard
    as i think i would have to cut in to the guitar to make space
    (i got exam coming up so have to put back doing it)
    {i could make it outside the guitar, wire it in and see how it sounds before putting it in tho}
  8. soulman969

    soulman969

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    If you're not certain how well you're gonna like it why not just stop by a music store and pickup a bass with a P/J pickup configuration and try that first before you start experimenting.

    If you like the combination then you can do the mods or better yet simply trade your PBass in for a P/J model and save yourself all of the headaches involved with the mod. Especially since you'll need to rout the body for the Jazz pickup and add a volume and tone pot for it.
  9. Angel LaHash

    Angel LaHash

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    oh no sorry .. not the mm P/J pickup
    its a MegaTone Switching what im worried about cuttign in to the guitar
    I dont mind about the P/J thing as its normaly so i know it works
  10. Steve Dallman

    Steve Dallman Supporting Member

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    I put a series/parallel switch on my 64 P bass back in 1976. Parallel was slightly thinner, with a little less volume and quite like a J pickup, but still humbucking. If I added a J pickup between the P pickup and bridge, I'd add a push/pull pot and wire the P pickup in series/parallel.

    In a headless, zeebrawood Explorer bass I built in 1980, I had a Dimarzio J pickup and P pickup, but I reversed the order. (why put the weaker pickup by the bridge?) For switching I put a Series/off/Parallel switch for each pickup. I used both series and parallel with both pickups and loved the tone of each.

    Attached Files:

  11. iunno

    iunno

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    It could be useful if you need a thinner tone, it pretty much sounds like a Jazz neck pickup. Some songs don't work as well with a thumpy tone.
  12. -Asdfgh-

    -Asdfgh-

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    I think one of the switching options in a Westone Thunder 1A (Single P pickup, but later versions are under a soapbar like cover) is series-parallel. But that is also combined with an active-pass switch and a filter-type EQ in active as well as standard tone so those additional options cloud the picture a bit.

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