jim ya ideally need a headunit that can control the xub channel seperate

next time i se ya il have a play, back in the old days iw as a bit into me stereo

what ya set ya gain too, rember dont set it all the way up as ya could blow te subs

oh and ya only want low bass for subs, ya not gonna hear treble through the boot as the wy the lines move, bass lines move slower and vibrate

ill have a look next time i see ya ( say this week when i collect me computer