I'm not sure if anyone besides Moonliner and Coaster Matt will be amused by this...
 

Crank up that Bass! Worlds loudest subwoofers. Just silliness, but fun

Neat.

Makes my "Red October" sub seem downright practical.

Thanks for posting Kevy and yes, I will show you my boobs!

Moonliner, do you have a PC-12+? It's quite a beast.

I've knocked things off the wall with my Ultra 10 - but that was playing "Master & Commander: Far Side of the World" at a bit louder than normal listening volume. (Regular listening volume shakes the seats, but doesn't tend to do anything to the rear wall).

Off the wall? Meh.

I've knocked over dishes two floors up. :D (Iron Man 2)

I set up the new audio system in a nightclub in an Orange County hotel a number of years ago. Unfortunately, this club shared a wall with the gift shop. The first night, we knocked dozens of mugs and other such (breakable) Tchotchke off the shelves. The gift shop proprietor was not too happy from what I understand.

It was only four 15's being powered by (if I recall correctly) about 2400 watts.