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Jazz Bass has very volatile tone knob?

Discussion in 'Pickups & Electronics [BG]' started by samuelsun, Aug 6, 2019.

  1. samuelsun


    Mar 5, 2010
    I've been playing my early 00's American-made J Bass for around 15 years. Yet, I honestly don't know if it's always had this issue and I'm just starting to perceive it due to doing more recording and playing a different style of music lately, or whether this is something that's gotten worse over time. I've never opened it up myself, but the last tech who set it up tested the electronics and said all was well.

    Basically, when the tone knob is all the way at 0 I feel like my bass sounds really dead...I like some highs and some slight pop and string wipe. However, as soon as I creep the tone knob slightly up, the first audible difference seems drastic, the metallic nature of the sound jumps at my ears, not to mention the hiss seems like it may be more audible than in the past.

    Is there a way for me to test whether it's functioning normally, or to verify that this isn't just the way it is before I open it up or take it to another tech?
  2. Go to the best Tech in your area and go over this with him.
    If he's good you can save a bunch of time.
  3. Samatza


    Apr 15, 2019
    Is it active or passive? If passive nothing should really change unless you have a dud potentiometer. Don’t understand the hiss, usually active circuits create hiss.
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