PU improvement help

Discussion in 'Pickups, Electronics & General Tech' started by Sogradde, Sep 21, 2018.

  1. Sogradde

    Sogradde SS.org Regular

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    Disclaimer: Please forgive the inflationary use of onomatopoeia but I feel this helps me in describing the problem.

    So I got two Ibbies with Dimarzio Titans in them. One has a trem, the other one is a hard tail.
    The one with the trem sounds perfectly fine with nice twangy chuggs and sweet leads. The other one initially sounded very dull when I installed the Titans. I went along with it but after a while I disconnected the tone pot, which made it sound really nice on the lower strings and really bad on the higher strings. While the lower strings have the kind of clarity and twangyness I was looking for, the high strings now sound very shrill and spiky, a bit like a cocked wah.
    The question is, how do I resolve this?

    The adjustments I can make to the pickup height are very limited as the bridge Titan is much taller than the Tone Zone that it came with and I'm lucky the distance between strings and pickup is about the distance I'd set it up to anyway.
    That leaves me with eletronic shenanigans I suppose. Two remedies I've been thinking about are:
    - Leaving the tone pot disconnected and switching the volume pot for a 250K
    - Reconnecting the tone pot but using a 1000K tone pot instead
    Would any of these choises leave me with the desired outcome? If not, what else is left?

    Cheers in advance.
     
  2. Alex79

    Alex79 SS.org Regular

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    I had the same problem of balancing out the low strings vs the high strings. In the end I got a Bareknuckle Nailbomb and that solved everything.
     
  3. saminator

    saminator Do you even praise, bro?

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    Is having the pickup cavity routed a little more out of the question?
     
  4. Kyle Jordan

    Kyle Jordan Ace of Knaves

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    Have you tried playing with the pole pieces?
     
  5. budda

    budda Guiterrorizer Contributor

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    Keep the bass side higher than the treble side?
     
  6. Sogradde

    Sogradde SS.org Regular

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    As I said, there is little room for adjustments Right now the mounting part sits flush on the cavity. I might be able to lower the pole pieces a little but not much.

    I'd rather try and fix this via electronics if possible.
     
  7. Sogradde

    Sogradde SS.org Regular

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    To simplify it a little: Tone pot connected is too dull, tone pot disconnected is too hot. I'm looking for the middle ground.
     
  8. budda

    budda Guiterrorizer Contributor

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    Try both the 250 and the 1meg and keep the winner?
     
  9. Sogradde

    Sogradde SS.org Regular

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    That's plan B.
    Plan A is asking on a forum, where people usually share their experiences.
     
  10. budda

    budda Guiterrorizer Contributor

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    You posted friday. By saturday night, you could have done the experiment and made a thread with your findings.

    This thread makes sense to make, not here t argue that. But you also could already have your answer :yesway:. And you may have found that none of those options work, and that would generate more discussion.

    Edit: did you try flipping the pickup?
     
  11. KnightBrolaire

    KnightBrolaire despair ahead

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    solder a capacitor onto the volume pot. It'll attenuate some of the high end. basically just experiment with capacitor values/pot values. some guitars kind of end up in a goldilocks situation where one value is too dark, one is too bright, and one is juuuust right.
     
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  12. Sogradde

    Sogradde SS.org Regular

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    That would be true if I was at home twiddling my thumbs. Turns out I wasn't.
    Titans are supposedly isotropic, accordings to Dimarzio (unfortunately).
    Been thinking about that as well but I don't know too much about the impact of resistor values on the tone to be honest.
    I would love to get my hands on the wiring schematics of the Ibanez JBM models because they come without a tone pot and I don't remember it being overly harsh or squeaky when I played one.
     
  13. KnightBrolaire

    KnightBrolaire despair ahead

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    basically with capacitors, the bigger the uf value, the darker the tone and more attenuation of the high end. .047uf is generally the "standard" value for humbuckers, but you can go bigger (.068 or .1, etc.) if you want a darker sound.
     
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  14. Sogradde

    Sogradde SS.org Regular

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    If someone is interested, I received a wiring diagram for the JBM100 from Ibanez Germany.
     

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  15. devastone

    devastone SS.org Regular

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    Asking for those who don't know, where would you suggest soldering the capacitor to the volume pot?
     
  16. devastone

    devastone SS.org Regular

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    The JBM wiring is pretty standard wiring, the only addition is the 330pF high pass cap across the volume pot, which is not the same thing that KnightBrolaire was talking about. The high pass caps lets some of the high end pass through as you turn down the volume.
     
  17. KnightBrolaire

    KnightBrolaire despair ahead

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    easier to show you, than describe it.
    [​IMG]
     
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  18. devastone

    devastone SS.org Regular

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    If you are looking at the back of the pot, that tab should be grounded anyway. If you are looking at the top of the pot, that is the input from the pickups/switch, in which case it is an always rolled off tone control.
     

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