Leon, it's basically the control scheme from a JS100, although if I was to redo it I'd do the 1000 because I've decided I DO like having the option of the high pass filter being disengaged. It's just a three way blade (a tele-style works in a pinch) wired up so with the coil tap in you get neck hum, both in parallel, and bridge hum, but when you pull it you get neck single, both out of phase, bridge single.
it's a personal thing but i think a coil tapped humbucker kills the sound of a parallel humbucker, and with that setup you've basically got six tones at your disposal, all quite useable.
Shawn, at the time I needed a bass more than another seven.
