Seymour Duncan Active EQ System Pickups for Bass Guitar? I found a set of these lying around for Jazz, AJJ-12 is the model number. They've never been installed and have all the pots, hardware, jack, etc. They are the ones that are all black, except for two white switches on the neck pickup itself, and three switches on the bridge Pup. I'm not going to change out the Pups in my Jazz to find out what these sound like, and that's the only bass I have with Jazz pickups, so I'm turning to you guys. Any experiences? Rants or Raves? Advice?