bass remote

Im running this zx 1000.1 and a kicker l7 15 it has gain bass boost and xover freq. bass boost is off, gain has been set via dmm and now this x over freq is confusing me. What is the basic range this should be kept at? Also the bass remote that is connectd by basically a telephone wire how do i...

Xplode cd player wired to an in-dash 9 band equalizer/signal processor(Kicker eq9). It is sitting on top of my remote bass dial & custom fitted/custom made bracket. Everything done on/in my car is done myself. Bracket included.