Recently I have build a precision bass and put a SD SCPB-1 pickup in the bass. I also used a 250k pot for volume and a 250k pot for tone control (cap 47mF). The sound was not that good, so I tried it without the pots, straight to the amp and it sounds perfect. I changed the pots (again 250k) and the cap, but the same result, bad sound (weak and not much low end). The wiring is according to what seymour duncan prescribed. What if would use 500k pots instead? Would I get more output?