I have a Xbox one set up with a Sony STR-DH520 receiver and Onkyo 7.1 surround sound speakers. The problem I have been having is that I recently just noticed that there is no sound coming from the center speaker. The Xbox one is linked to a projector through the receiver, but also has an optical audio input connected as well. I have tried every option I can think of on both audio settings to get the speaker to work, and short of running stereo sound on a 7.1 system I cannot get the speaker to do much of anything. If I switch inputs on my receiver over to my bluray player I get full surround sound with the center speaker functioning correctly. It's a very frustrating thing because I keep missing audio in games that is evidently not going through the intended center speaker.