We finally got everythign installed in my buddies truck, new amp and everything...turned up the music a little bit, not even that loud, and we start smellin smoke...that was only after 60 secs of playin it. I looked around and didn't see anything, got him to turn it up some again, more smoke, and i see some comin out of the box, so we take out the sub and ill be damned...nice gray cloud coming out of it. the sub was a CVR 10-2 (dual 2 ohm voice coils) wired up to have 4 ohms resistance (300watts RMS and 600watt max sub) and the amp is 600 max, 300 rms at 4 ohms...we didn't have anything turned up, bass boost was right around 0, we didn't have the lows turned up much on the H/U...so was this just a shitty sub or what?? we are gonna try to take it back since it was only played for 15 mins...