First a disclaimer, I have done a lot of searching through the threads and have read a lot about the various PU's available. But, I apologize if this feels like deja vu to you... The problem: My jbass copy (w/bart single coils and preamp) as well as my Modulus Q5 don't cut through the mix well in certain rehearsal spaces that I play regularly in (the lows sort of "melt" away and lose their punch and impact). I've tried many different types of strings and amps with both basses and they helped little. So, one day I borrowed a friends MIM Pbass which I tried through my rig in the same space and it cut much better. So, I'm thinking this is partly due to the humbucking PU on the pbass. And I would like to convert the jbass (which has flatwounds on it) to something like the Dimarzio Model J's to go for a punchy cutting old school tone. Am I on the right track? thanks!