I was trying to figure out why G&L uses a large (.1uf) cap on one coil of a humbucker in series mode, and started playing around with it on my bass that has dual-jazz pups. It is REALLY COOL! I never used the series setting because the sound was so muddy. By putting a cap across one coil, a ton of the midrange is scooped out, the treble is about as loud as the parallel mode, but the bass is full-on series loud. It sounds, well, like you just cranked up the bass. With the bridge pup soloed I have a totally new sound that I think will be useful. It sounds well-balanced and full, but still "punchy". I think the neck pup will have so much bass that it will be boomy, but I really like the new bridge-only sound. You G&L people are thinking "yeah, dude, whatever, glad you finally found out", but I am kind of psyched about these old analog tricks, and getting a new sound from a bass I was a little tired of. To the rest of you with dual coil pups, throw a cap on there and see what you think!