I am watching the football playoffs on Fox. I have Direct TV. I just hooked my old Sony Surround Sound up (STR-K750P) and everything seems right. There is only 1 problem. The low def channel sounds much better than the high def channel. I tried to compare a movie channel on high def and low def and I think they both sounded good. This leads me to believe that Fox is the problem... Has anyone ever had this problem. Any help is greatly appreciated.