Don’t know...mine works just fine. What iphone is it? I wonder if your using “Live Photo’s” and they’re not actually too big, but the server just doesn’t like them? Should I try a smaller center channel I could not get the center high enough maybe I’ll stick to using lcr set up .?? Any tips this receiver originally had a tiny center ?? Would you stick with bookshelf or try a few dedicated centers first ? Does flipping a bookshelf speaker effect the sound distribution?? Many help ?? Ultimate bass lover !! si ht15 dvc. Free the reptile [emoji1656] aliens [emoji89]