 left channel cuts out when high pass is switched to on (on amp)
I have an alpine v12 MRV-F357
After 8 hours of wiring, taking of door panels, locking myself out of car and sliding in through the trunk / rear seat arghh.. I managed to get everything working, but my front speakers are farting a bit, so I have turned on the high pass on my stereo. But I'd rather use the high pass on my amp there is more control, but when I turn on the high pass for channels 1 & 2 (the front) it only plays out of the right speaker? if I turn the high pass off for 1 & 2, I get sound out of both speakers again.
Any idea what I'm doing wrong? dodgy amp? | 
