Ok my question is this? Without getting into too much detail. how have you set up the crossovers and have you done this in your receiver or are you using the sub?

2xM80 VP180 2xQS8 2xM3 HSU STF3 LG 60PS11 Denon 3808 ATI 1506 LCR 2xATI 1502 Oppo BDP-83