lol those guys do not know anything about car audio. I remember when I was younger they had a myth about subwoofers breaking a winshield. they used one huge (3 foot?) subwoofer and also had a sunroof of some sort. they called the myth busted. not sure if they understood the concept of multiple subwoofers and ton of watts. doubt they would attempt the myth again considering the cost of the myth lol
I'm pretty sure they did 160 + db at 16 hz. That sounds like a few world records even today. They didn't go through the process of reinforcement and the other variables needed which is what the problem was with the episode.
I've always hoped that mainstream media would get an accurate representation of this industry. Maybe this is it.
if you watch how their sub goes out of control at the end you will see it went off balance therefor it had no suspension. If it had some balencing tension on the drive shaft where it moved the cone they could've gone a few more rounds. With the number they pulled out wasn't all that bad but they could've done more if they had planed the construction of their homemade sub...