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Help wiring passive MM.

Aug 7, 2021
58
120
Hi all,

I need a little advice about wiring up a bass I've recently built, please. I have soldered new pickups in before, but never created a harness from scratch.

I've recently built a new body for a neck I've had for years. I have put a MM pickup in the sweetspot, and wired it up with a pre-wired jazz harness with 250k pots. Each coil is connected to a volume pot, one which serves as a push/pull series switch.

It sounds nice, quick and punchy with one coil turned on, if a tad dark. With both coils on full in parallel, I get a hint of that scooped/crisp parallel sound I was expecting, but it is very muddy/dark.

My plan to gain some of the high end back was to wire a harness with a s/p/s switch, a single 500k tone pot, and to switch to a 500k volume pot. Would this make a noticeable difference in giving me more treble?

Thanks in advance!
 
500kOhm pots will help a bit. But remember that passive instruments are susceptible to capacitive losses all the way to the amp. So when testing, don’t use any pedals, and use the shortest cable you have.

Also, perhaps new or different strings?