Just a couple of more things. Make sure you have your sub crossover knob on "bypass" since your receiver is managing the crossover to the sub (80hz). If your sub does not have a bypass selection, just turn the knob clockwise to the highest setting to get it out of the way.

Also, have you calibrated your system so all speakers, including sub, are at the same SPL? This is normally done by running the receivers test tone and using an spl meter to achieve approx. 75dB's across the board.

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