There is a guy who lives in my home town who had a 90some Blazer with 6 or 8 12's I think and 4 amps. My friend was in there with him and he didn't even have it turned up all the way and it made it hard for him to breathe. So much pressure that is pushes down on your chest...nuts!
Another person I know had 2 Kenwood Twisters I think and blew the sunroof out of his Sunfire.
