Hi
i am currently doing year 12 at school and i have decided to build a bass guitar for my industrial technology major project. I have purchased 2x SMB-4D replacement pickups for a music man 4-string bass, through the Seymour Duncan web page. I would like to set them up as active Double Humbuckers with a three way toggle switch. I need to know what electronics i need to do this. Any information would be great.
???

Depens on how many volume & tone pots do you want ie 2 volume , 2 tone or 2v 1t etc more info will help

Duncan makes a few nice MM preamps.

2 volume 2 tone