They do ok....We had prestons explorer doin 57's off my 8 lvl5's on 4 2.0k's. I didn't have much time to play around with it before he ripped it out. 2:1 1.5 cubes to 3 cubes per sub iirc. Don't remember what the port area was. It didn't play the lows(sub 30) as well as he liked, but from 35 on up it was a monster.