When the guy who had been boring me with his boasts about his new 7.1 system (which I've heard and it's OK) stoped by, I happened to have the VHS movie "Contact" set up to start. At the beginning of the tape there is the THX logo and music (you know, that long orchestral rush that starts softly and then builds to a thundering climax). I set my amp to MAX and let 'er rip! It takes about ten seconds, and about a third of the way in he's waiting for it to start to harsh-out, but it never does. By the end of the ten seconds you can feel the bass vibrating your whole body, and then it's over. And, after I turn it off, I help the guy lift his jaw off the floor. He said it's better than **x. I said, No, not really better than that...well, OK, maybe just as good.
Onkyo TX-SR702 receiver
Aperion 632s front
Aperion S-10 sub
Aperion 533 VAC
Aperion 532s surround