recently, my sound system (2 15" Blitz subwoofers with 1000 watt kenwood amp) started shorting out and eventually stopped completely. I took it to my sterio shop and they made me upgrade to a thicker power wire which I should of done when I upgraded from 12 to 15" subwoofers. It worked much better and hit much harder after they replaced the wire, but it is still partially shorting out. the subs will just stop working for a few secs during a song then start again. Does anyone know why they are doing this?