08:44Take a trip back to 1992 and see this technologically advanced automotive subwoofer up close and personal. The "C4" was a radical design at the time integrating two pairs of 6x9 su
07:45I say "dead simple" and that's true - it doesn't take much to glue a weight onto a speaker cone. But there is a lot of work that goes into figuring out how much weight to add. And
