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Pairing a Fender '62 precision pickup with a 500k pot?

Discussion in 'Pickups & Electronics [BG]' started by ambissonnett, Jan 2, 2014.

  1. ambissonnett

    ambissonnett

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    Hey guys,

    I made a post a few weeks back about adjusting the pickup height on my PJ bass. I have a Fender '62 vintage precision pickup matched with a Seymour Duncan STK-J2B hot jazz pickup. I learned from this that Fender pickup doesn't have a high output, and I think that's what I'm lacking. So instead of shopping around for a different neck pickup, would it be better to just swap out the 250k pot for a 500k pot? Would this affect the tone or anything? Help please.
  2. BawanaRik

    BawanaRik Supporting Member

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    For a couple of bucks and the price of solder it might be worth the risk.

    This isn't a real 62 though, is it?

    Any mod to a straight 62 would be frowned upon.
  3. ambissonnett

    ambissonnett

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    No no, it's a reissue one. I had that one installed when I converted my new purchase from active to passive. I wanted a good growl, with bright punch to it. I thought the warmth of the vintage would help balance out the hot jazz. I'm guessing the jazz is a little to hot for this one. So I thought I'd try a easier solution than a whole new pickup replacement.
    Still any idea if it would affect tone, volume, or just straight up sound terrible? I'm looking for a brighter, louder sound from it. From what I've read here before, that might be a possible solution.
  4. Major Softie

    Major Softie

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    Yes, it affects tone. Treble (higher frequencies) "leak" past resistance more easily than bass frequencies, so 500k of resistance attenuates proportionally more bass than 250k of resistance. So the 500k pot should allow a brighter sound than the 250k pot.
  5. JustForSport

    JustForSport

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    Does a wide open 500k pot "attenuate(s) proportionally more bass than 250k of resistance" pot, or just allow more treble thru?
  6. Major Softie

    Major Softie

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    I dont' know from experience or personal testing, but the graphs I've seen show a 250k, a 500k, and no pot at all, as all having a different impact on treble. But, I can't remember if those graphs were as a tone pot or as a volume pot, and you haven't specified either.
  7. JustForSport

    JustForSport

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    Didn't mean to derail the thread...
    But I was aware of the impact on treble, and that vol and tone pot values combine their affect,
    was curious as to the affect on the bass, tho.
    I'll have to look into this a bit more.
  8. Linnin

    Linnin

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    I'd stick with 250K CTS pots. Instead I'd pull the too hot SD jazz p'up and replace with a corresponding Fender Custom Shop 60's jazz bridge p'up. They will make for a superb match up. I'd also recommend using a Sprague Vitamin Q 0.47 microfarad tone capacitor. All will be copasetic.
  9. walterw

    walterw Supportive Fender Gold Supporting Member

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    try it; 500k volume and/or tone will add brightness.

    you'll want linear volumes, especially with 500k, or they'll drop off so fast as to make blending difficult.

    also, the fender P should be plenty louder than the duncan stacked J.
  10. ambissonnett

    ambissonnett

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    I know the Fender pickup is louder, I'm just looking to get more out of the P pickup in the PJ blend. So I was wondering if the 500k pot would be a solution.
  11. Grissle

    Grissle Supporting Member

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    No a 500k pot will not boost a pickup. It will just let more treble through.
    If I understand you correctly it sounds like the Duncan is just too hot for a good balance with the P pickup. Try wiring the coils in parallel on the J, assuming its a four wire stacked coils pickup. This will lower its output a bit.
  12. ambissonnett

    ambissonnett

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    So would a possible solution be to just raise the P pickup? If so, got a recommended height for both the P pickup and J pickup? Just to help get a better blend of the two pickups.
  13. Lownote38

    Lownote38

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    I would personally lower the J pick up until the output matches the P pick up. Then, turn up the overall volume on your bass and/or amp.
  14. Grissle

    Grissle Supporting Member

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    Edit: Misunderstood earlier post.
  15. walterw

    walterw Supportive Fender Gold Supporting Member

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    i still don't believe that a stacked J, "hot" or not, is gonna overpower a P pickup; stacks are inherently weaker in output than regular single coil Js, much less P pickups.

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