Well, I was hooking up my receiver and was finishing up with the surround speakers. I had the reciever on ( yeah I should know better) and while I was putting the wires in the back one wire from one terminal touched another speaker wire that was hooked up in the other terminal. A loud pop insued and now there is no sound from either surround speakers. The others are ok. Does anyone know what I did? Short circuit? Is it fixable?