I have a sony xplod 1000 w amp hookep up in my van, pushing 2 pioneer 12's. 3 days ago, though, the subs stopped working all together, not weakened, just cut out all together. I looked at my amp to see if it had simply lost power, but the power was still on, and the "over current" light was not on. The amp has a good power source, so i assumed either the RCA jacks or the amp were fried. Stranger though, i borrowed my brothers amp, which worked literally 3 minutes before i hooked it up, and it did the same exact thing. I have replaced all cords and leads except for the RCA jacks, and still no output what so ever. I do not have an extra set of RCA's that i know work for now, so could i use a RCA to 3.5mm as my input to test the output on my sub? is it possible that 2 subs (and a 3rd (good) one that wouldnt even power on) would have gone bad spontaneously? any help advice or suggestions are appreciated.