Thanks for the reply. I hooked up optical cables and got sound from all speakers but it is terrible compared to the 2 speakers that work as I said above. I think my amp is defective. It was an open item at Best Buy. It may have been returned defective.
I am the newest possible at this (having waited until age 51 to venture into home theater). I have a Denon 2106 with 7 speakers plus a sub hooked up. When I run the speaker test all speakers respond so I assume they are hooked up correctly and working but I can only get sound, TV or DVD, using...