Glass, i still have that whine in my speakers. I tried grounding everything. I noticed when i unpluge everything from my xover and run the hu striaght to the amps it go's away. I tried another xovers, both do the same. Any input on why, thanks.
well that would indicate a couple of things bad ground for the XO power supply line driver voltage of the XO isn't set properly (if it has one) bad XO (although that'd mean both are bad) pinched RCA cable (very possible)