Hi, I am building a bass humbucker. Initially I wanted to make alnico stingray pickup, but I could not find large magnet poles. So I made it with two small poles (18 x 5 mm dia), like the JB pickups. Furthermore, due to the narow string spacing, they're a bit angled to fit. I definatelly will go for parallel wiring of the two coils. Aiming for ballanced tone, not too hot, that would (eventually) work well for slap playing. How many turns to make a coil? It will be scattered winding (lower capacitance, better top end). The coil is 13 mm high (taller bobbin, better top end). Maximum possible width of the windings (crossection) - 7 mm. The bridge pup on the bass is cheap chinese ceramic pickup. Total resistance of ~11k5 or 5k(smth) per coil. Still, it works ok, wired in parallel, getting ~2k6 total resistance. Isn't it too low ?