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My bass switching from active to passive mid-song

Discussion in 'Basses [BG]' started by rudkeja, Dec 13, 2013.

  1. rudkeja


    Oct 13, 2013
    Hi guys I have an active Musicman SUB bass that i always had an Vox headphone amp plugged in. I was playing the bass just fine yesterday then just today, it sounded like it was constantly changing from active to passive pickups, could it be that I need to change the battery or is it a jack thing?

    Batteries are still stock and the headphone amp was just plugged in for a couple days so i guess it could be that the battery has no juice left.

    Bass newb here so sorry if this is a no-brainer
  2. PotsdamBass8

    PotsdamBass8 Supporting Member

    Jan 23, 2005
    Long Island, NY
    What makes you think it was switching from active to passive? What did it sound like?

    If your bass has active and passive mode, you would need to flip a switch or pull a knob to go between the two modes. If a battery were to die in active mode, the sound would just stop completely. I don't think your bass even has the option to switch between active and passive mode though.

    Definitely don't leave anything plugged into the bass when not playing, that turns on the preamp and it will drain the battery.
  3. rudkeja


    Oct 13, 2013
    Basically the sound is really strong at first then it suddenly goes really soft then back again repeating the same thing. I'm getting a battery first thing tomorrow to see if it's the issue. No switching from active to passive though
  4. christw

    christw Get low!

    May 11, 2008
    Dayton OH
    I want to be Tesla (tinkerer at Dayton Amp Co)
    Sounds like a dying battery. When your battery dies your bass doesn't become passive. It loses volume and then flat out won't work.