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Hiss issue with Active spector

Discussion in 'Pickups & Electronics [BG]' started by mamiedenise, Jan 17, 2019.

  1. mamiedenise


    Jan 17, 2019
    Hi ,
    for a while I have a sound problem with my active bass. It's a spector Ian Hill signature. An active bass with emg p&j pu.

    Sometimes the sound is very clean with almost no noise, even with high at maximum and a moment later i have a lot of hiss.

    When the problem occurs :
    if i touch pu's scews or some screws at the back, there are less hiss
    if i touch strings or bridge nothing happens
    If i touch the preamp, there are more hiss

    It's getting worse with time.
    Is it a ground or wire issue ? Or maybe the pu and or the preamp ? I'am not good in electricity. So if you have advices and experiences with such problems that could help me to figure what's wrong and how to fix it , I will appreciate.

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