Have a Sony 36XBR800 TV, Yamaha 1400 receiver and Infinity TSS750, Sony Directv/tivo combo and a Sony DVD 5300. I just got my receiver and Yammy 1400 has the auto setup which is sweet. But , I went in manually to see if I could get a better sound. Hard to tell. I do have my sub at 120 HZ crossover. The THX standard for my speakers(per my receiver) is 80 but in researching it,that is too low. When I see a movie, the receiver display says enchanced surround sounds, Should I set it up for something else, the configuration is set at auto, will I get better sounds? What other tweaks could I do to optimize my surround sounds, sort of a to do list kinda of thing- that I might be missing.