I have no idea how it happened.
I pulled it out of a friends car.
He bought the car second hand, so the system was already in it. I looked at everthing and the install was pretty crappy. No dblock to the 2 amps, no fusing for the amps, etc....
He said that when he turned up the volume really high on his radio at a party with some friends, the amps cut out. Then he was playing it again, opened the headunit to put a new cd in, and now the radio doesnt work, or the amp.