Do you have the sub hooked to the "Sub Woofer" RED jack in the pre-out section, it would be a single (one) coax cable from this jack to the input on the sub.



M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85