The ShadowMusic Web Community

Got the email below via y web site can anyone help him?

I recently acquired a Baldwin/burns baby bison bass that has some electrical issues. Do you happen to have a copy of the schematic for this model? I have been googling all day and can't seem to find one anywhere online!

If I recall, the circuitry of the Baby Bison Bass was, apart from the four-pole pickups, the same as that of the Baby Bison guitar (and, for that matter, the GB66, the Vibraslim or the Vibraslim Bass). They all had two-coil pickups with a control to vary between single and double-coil (marked "Density").

Any of those diagrams will be sufficient.

IIRC, the Baby Bison guitar had what would today be called humbucking stacked coil single coil sized but dual coil pickups and the 'density' control was a rotary pot giving variable degree of coil tap, rather than a sudden discrete switch between single and double coil as with a more commonly used two pole switch.

I also seem to recall that the density control only operated on the neck pickup?

Hi everyone, I'm the guy that contacted balston11. Thank you all for the replies. My research supports what cockroach said about the neck pickup being a stacked dual coil with a density pot that controls the volume of the second coil. In an older thread I saw a link to this: https://www.seymourduncan.com/blog/the- ... -split-mod which seems like a similar, though simpler, circuit. JimN mentioned a few other models that have the same pickup set and wiring, does anybody know where to find a schematic or wiring diagram for any of those models (Gb66, vibraslim bass, baby bison guitar)?

Bug wrote:Hi everyone, I'm the guy that contacted balston11. Thank you all for the replies. My research supports what cockroach said about the neck pickup being a stacked dual coil with a density pot that controls the volume of the second coil. In an older thread I saw a link to this: https://www.seymourduncan.com/blog/the- ... -split-mod which seems like a similar, though simpler, circuit. JimN mentioned a few other models that have the same pickup set and wiring, does anybody know where to find a schematic or wiring diagram for any of those models (Gb66, vibraslim bass, baby bison guitar)?

I couldn't find a Baby Bison schematic on line..I'd suggest you wire the bass neck pickup to the third pot( 'density' control) as per the Seymour Duncan Spin a Split wiring diagram- should have the same effect on the pickup's sound etc..