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Fixing Jazz bass "wavering/ chorus" sound in high register

Discussion in 'Pickups & Electronics [BG]' started by krfoss, May 17, 2017.

  1. krfoss

    krfoss Supporting Member

    Nov 29, 2007
    Orange County, CA
    I have a Fender Jazz 24 V bass that sounds great, but when you play in the higher registers, the sound begins to take on a "wavering" sound that almost sounds like an awful chorus pedal is constantly on.

    What's going on, and how do I fix this? I've made no modifications to this bass ever, but it has has always done this.

    Thanks everyone!
  2. Are the pickups too high?
    Rabidhamster, DavC, bobba66 and 16 others like this.
  3. bholder

    bholder Affable Sociopath Supporting Member

    Sep 2, 2001
    Vestal, NY
    Received a gift from Sire* (see sig)
    Specifically, the neck pickup is usually the culprit, since fretting notes high on the neck puts the string so much closer. If lowering the pickup makes it go away, problem solved - I usually raise my pickups until I hear the effect, then back them back down until I don't. ;)
  4. BrotherRay


    Nov 28, 2016
    Detroit, MI
    That bass has Quarter Pounders, doesn't it? Those pickups have a strong magnetic pull, don't they?
    Who else got Quarter Pounders, and what did you do?
  5. ahc


    Jul 31, 2009
    No. Virginia
    Lower the pickup(s) as has been said.
    jamro217, jmlee, BrotherRay and 2 others like this.
  6. GK Growl

    GK Growl Banned

    Dec 31, 2011
    What kind of strings are you using? Taperwound/exposed core strings can cause this no matter what the pickup height is. It will be audible acoustically too.
    zac2944 and GK Breivik like this.
  7. krfoss

    krfoss Supporting Member

    Nov 29, 2007
    Orange County, CA
    Roundwound something (its been a while, so I dont remember the brand). I'll adjust the pups and report back. Thanks.
  8. GK Growl

    GK Growl Banned

    Dec 31, 2011
    So they aren't tapered/exposed core?
    David Jayne likes this.
  9. I've been there.
  10. krfoss

    krfoss Supporting Member

    Nov 29, 2007
    Orange County, CA
    Probably not. What are d'addarios? The cheapest ones. They are probably those.
  11. GK Growl

    GK Growl Banned

    Dec 31, 2011
    Yeah, 1/8" from the bottom of the string to the top of the polepiece is a good starting point for Jazz pickups.
  12. mc900ftj

    mc900ftj Supporting Member

    Jan 21, 2014
    Try this!
  13. Yep lowering the neck pickup (or both) should resolve the warble.
    jamro217 likes this.
  14. s_wood

    s_wood Gold Supporting Member Supporting Member

    Mar 23, 2003
    Delaware (USA)
    It could also be a broken core inside the string. That can happen, and it's happened to me, without any externally visible signs.
    SanDiegoHarry likes this.
  15. InhumanResource


    Dec 28, 2012
    Replaced 'em with normal single coils as soon as possible. Did not like them.
  16. big_fundamental


    Oct 3, 2016
    Besides the pickup height, other thing to check is for a twisted string/strings.This can occur if the strings are installed by winding them around the pegs by hand instead of twisting the tuning keys. If they have been installed for awhile doing this, may need a carefully installed new set of strings to rule that out.
    GK Breivik likes this.
  17. 4dog


    Aug 18, 2012
    I slept ok....just didnt sleep enough...played my game waay too long...lol
    Gully Foyle likes this.
  18. 4dog


    Aug 18, 2012
    Totally disregard...i have no idea how to fix your problem...lmao....nothing to see here...move along...move along.
  19. Clef_de_fa

    Clef_de_fa Guest

    Dec 25, 2011
    could this chorus-y effect created by slightly off-tuning ?
  20. michael brown

    michael brown Supporting Member

    Jun 21, 2005
    Also check intonation....my jazz did that....I could tune with tuner ....
    But then when I played a chord upper register,,,I got strange vibrato effect
    It was just intonation being out....
    adbass likes this.

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