I have a full Sony Sava 500 Speaker set up with a Creative receiver. My issue is the center speaker will not produce any sound. So basically all talking in movies and most games does not work. all other speakers work fine including sub woofers. the speaker itself is fine because i tried plugging it into the rear terminal and it made sound as if it was the rear. Any help would be great. I took the rear panel off and tried to check fuses and they all seem to be ok... So i'm lost for words at this point. Thanks!