We have been having trouble hearing dialog on surround sound TV/Movies. Everything was in phase per the wiring with no phase messages on 8.4. I decided to do an experiment today andchange the center channel to what I think should be out of phase. When I downloaded 3.6 and ran it, once again, I did not get any message about the speaker (or any speaker) being out of phase.
I haven't had a chance to listen extensively, but the center channel does seem clearer. I'm not sure if it sounds clearer because it's now out of phase and doesn't blend as well....or if there was some signal cancellation going on when it was wired in phase....or if the speaker is internally miswired.