1. Please take 30 seconds to register your free account to remove most ads, post topics, make friends, earn reward points at our store, and more!  
    TalkBass.com has been uniting the low end since 1998.  Join us! :)

Ibanez BTB 775 Electronics? (Pics)

Discussion in 'Pickups & Electronics [BG]' started by backline112, Sep 18, 2009.

  1. backline112

    backline112 Guest

    Jun 3, 2008
    Does someone know what the blue knobs on the back of the BTB 775 do? I've experimented with them but I'm still confused as to what exactly do they do. Increase output signal? Increase/Decrease treble (or bass?)

    I searched.




    Link to more pics:

  2. mmbongo

    mmbongo Chicken Pot Pie. My three favorite things!! Supporting Member

    Looks like level adjustments. Does it have piezo?
  3. backline112

    backline112 Guest

    Jun 3, 2008
  4. backline112

    backline112 Guest

    Jun 3, 2008
    Bump. No one? =(
  5. yea i believe that bass does have a piezo. I know the 750 does.
  6. two fingers

    two fingers Opinionated blowhard. But not mad about it. Gold Supporting Member

    Feb 7, 2005
    Eastern NC USA
    The term used by Ibanez is "Piezo Sensitivity Trims". They are for setting the Piezo pickup for EACH string to balance the output with the megnetic pickups. The other two should be level adjustments for the magnetic pickups.
  7. backline112

    backline112 Guest

    Jun 3, 2008
    Ahahahaha are you serious? Those little blue things on the back of the bridge are 5 small pickups?

    Hey thanks a lot two fingers, I always see you're helping people. Thanks to your post I included the word "trims" in my searches and found a manual! I understand everything now. Thanks!


    EDIT: The Manual.
  8. The pickups are actually under the bridge saddles. See the little wires going from the bridge on the pic? They are going from the pickups to the circuitboard.
  9. inmate13


    Nov 4, 2010
    How come i dont have these on mine 775 :)
  10. Jammin Johneboy

    Jammin Johneboy

    Dec 23, 2011
    BTB775s did not have the bridge pickups as far as I know . The bridge pickups were in BTB 785s .

    Also here is a link to an Ibanez owners manual , it shows how to adjust the bridge pickups for Ibanez basses . http://www.ibanez.co.jp/world/manual/guitars/EDA.pdf

    The five holes under the bridge are the individual string volume adjustments as has already been said here . With the other two holes , the one closest to the bottom of the bass is the overall volume for the bridge pickup to balance it against the volume of the magnetic pickups . The other hole a little higher up is an EQ adjustment for the brightness of the bridge pickup .
  11. Stealth


    Feb 5, 2008
    Zagreb, Croatia
    The blue things are trimpots - small potentiometers similar to the knobs on the bass, but they're adjusted with a screwdriver. Basically, it's a set-and-forget thing - once you get it working, you usually ignore it.