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Differences in Volume with similar bass and pickups

Discussion in 'Pickups & Electronics [BG]' started by thevintagesound, Apr 27, 2009.

  1. Hey guys,
    I have two basses that are pretty similar in build and pickups however one is about 6-10db quieter in volume. Here's the low down on the basses.

    Bass #1 - Jazz bass body, jazz neck, Leo Quan Badass II bridge, Tbird Pickups wired the same as the tbird stock wiring (V/V/T). Big Volume!

    Bass #2 - P bass body, jazz neck, Leo Quan Badass II bridge, Tbird pickups, 3 way switch, (Volume/Tone). Quieter even with the strings closer to the pickups.

    I took some measurements at different settings at the input jack per bass.

    Bass #1 - Jazz
    Both volumes Max, Tone max - 6.52k
    Front max, tone max - 12.6k
    Rear max, tone max - 12.8k

    Bass #2 - P
    Switch Center (both pickups active), volume max, tone max - 7.16k
    front pickup, vol max tone max - 14k
    rear pickup, vol max tone max - 14.2k

    I am familiar with guitar pickups, that generally the higher resistance is higher output. Is there a difference with the bass pickups?
  2. bongomania

    bongomania Gold Supporting Member Commercial User

    Oct 17, 2005
    PDX, OR
    owner, OVNIFX and OVNILabs
    No, same story with bass pups. If I had to guess, I'd say maybe there is a poor solder joint, faulty or dirty pot, or weak connection somewhere in the quieter bass.
  3. Could series / parallel be a factor? Looking at the readings looks like they are wired the same.

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