Dear Lord!
That was awesome
I've a 5.1 KEF speaker system for my TV powered by a DENON amp and the KEF subwoofer can jitter the bottom of my jeans when sitting on my couch if I face the subwoofer directly opposite.
The subwoofer is double sided and is covered in a thick rubber like car tyres - when I got it set up, the guys installing it used a THX test DVD to check everything and it had that part on Raiders of the Lost Ark movie at the beginning when Harrison Ford is running out of the Temple with a huge boulder behind him and that's when I noticed my jeans jittering with the bass - lol.
If I turn the vol up hard, you can't hear the person sitting next to you if they are shouting at the top of their voice.
I'll do a video sometime to show it's bass SPL
Here's a recent video of the bass/paper test we perform on headphones - it acts as a visual demonstration of how sub bass hits paper in the way it would hit your ears and side of head.
[VIDEO]http://youtu.be/j4YmvjwJW3M[/VIDEO]
WELCOME TO THE EXTREME BASS CLUB!