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bartolini preamp woes...

Discussion in 'Pickups & Electronics [BG]' started by gumwr, Dec 17, 2002.

  1. gumwr


    Jun 3, 2002
    Harrisonburg, Va
    hey guys,
    i've installed a bartolini ntbt 2 band 9v or 18v preamp in my bass. i got wiring diagrams from the website and installed it just as it specified. i also included a passive/active switch (on/on switch i got from radio shack...). finished the project today and plugged it in for its first run. on the passive side, it sounds good, not any different than it had before, only the volume is very low, not inaudible, just pretty low (much lower than the previous passive system). in addition, when i switch to active, the sound almost disappears! its so low you almost cant hear it! i dont know what i've done wrong. the conections look good, and everything is in its correct place. please help. offer suggestions if you have had problems like this before or if you know much about electronics and know what this may be. thanks in advance
    william gum
    ps. check out the wiring diagram here: http://www.bartolini.net/1_wirngs/ntbt_2.gif
    check out the passive/active switch diagram here: