Your HT setup will sound great. Just be sure to switch the receiver to 4-6 ohms. If you aren't getting the "slam" you were expecting with action movies, first play with the placement of the M80s...moving them too far out into the room substantially reduces the bass output. If placement doesn't solve any problems (which isn't to say you'll have any...the M80s have a LOT of bass), a local shop should let you take a sub for a home audition.