I have a brand new Sharp LC-70LE732U television. I also have a Bose Lifestyle v35. My Bose system is connected to my tv via optical digital cable. The problem is, when i am watching tv i only get a 2 ch audio. When i have my iphone connected to my system its all 5.1. Even when i'm listening to the radio its 5.1. For some reason with my tv its only putting out 2 ch. PLEASE HELP.