I ordered the Onkyo HT-SP908 7.1-channel home theater system from Amazon.com. The receiver that came with it is the TX-SR605. I am having a problem with the center speaker not working. I have hooked everything up correctly but the center speaker will not put out any sound. I know the speaker is good because I hooked it up to one of the other speaker wires and it works fine; also tried different speaker wires but nothing. I hooked one of the other working speakers up to the center connection on the back of the receiver and I get nothing. I think there might be a problem with the center connection on the receiver. Also when I put it through the Automatic Speaker Setup (Audyssey 2EQ) function it did not even recognize the center speaker. Everything else seems to be working fine. What do you suggest? Any help would be greatly appreciated. Please advise.