Look at how speakers can turn into monsters

Guy Installs 17,000-Watt Sound System in Car, to Be Classified as Weapon of Mass Destruction

(copied from gizmodo)

We thought we wouldn't be surprised by any car sound system ever again. Until this guy cranked up the volume of his custom 17,000-watt 8-Sundown Audio SAZ-1500D rig and we saw his iPod jumping half an inch, the whole car rumbling, the metal roof shaking like a leaf and then his hair getting blown away—literally—by the air coming of the window. [Spluch]