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Aguilar OBP-3 Wiring - Adding a tone that works over Active Circuit

Discussion in 'Pickups & Electronics [BG]' started by bluefizz, Jun 30, 2017.


  1. bluefizz

    bluefizz

    Aug 8, 2008
    Los Angeles
    MTD, Bartolini Electronics, La Bella Strings
    Hello all!

    I just bought a cheap KSD bass and want to install an OBP-3.
    I found the typical wiring diagram for it that I was going to use, but I want to add a tone knob that also works over the 3-band active eq. as well as in the bypass passive circuit (I know its possible because my old MTD Saratoga had it).
    So in the end it would have 5 knobs and 2 switches-
    Bass/Mid/Treb/Blend/Volume Stack with Tone/Mid Select Switch/Bypass switch

    Any idea how to do this?

    Thanks

    Heres what I found:
    obp3-2-diagram-.

    Heres kinda what I want (mins the coil tap switch):
    MattG-Control-Layout-Border-59259e4ea2f4e.
     
  2. You wire up the tone in the volume/blend circuit just like you would on a passive bass. The tone just gets wired in after the volume pot and the same leads then go to the preamp. If you search hard enough you can probably find the actual schematic from Aguilar. I know they used to offer this option in the universal wiring option OBP-3 schematics.
     
  3. Found it.
     
  4. bluefizz

    bluefizz

    Aug 8, 2008
    Los Angeles
    MTD, Bartolini Electronics, La Bella Strings
    Nice! Thanks!