Plus if I have to go big I have a pair of JBL PA subs that I power with 1100 watts each.
Keep in mind that most PA subs are designed to pump large volumes at music frequencies only....NOT the really deep LFE frequencies that are embedded in movie soundtracks. You're likely to find that those JBLs would actually LOSE much impact when playing a soundtrack. If they can pump out 120dB of 35Hz bass in a big room, but can't reach lower, they're not going to do you any good unless the rest of your system is ALSO playing at 120dB.
I'll take a sub that goes down to 20Hz at 115dB anytime for impact from soundtracks!
