I had everything hooked up right from my stereo to all four speakers in my car. I also had all the wires connected from my stereo and my battery to the amp and from the amp to two sub woofers. The stock rear right speaker was not working so to test it I unplugged a sub woofer and touched the wires from it to the speaker that was not working. Immediately the other sub woofer started playing a loud low constant note. I unplugged the second sub woofer. Now if I turn on the radio, cd player, or auxiliary on my stereo nothing works. What did I fry?