I am slowly assembly a budget system and am looking for recommendations on calibrating my system. I have not purchased an SPL yet, but am looking for dts and/or digital setup discs suggestions. I am especially having difficulty calibrating my little PDR-8 sub as the test tones of my Yamaha receiver do not output bass tones. I find that the sub sounds pretty crappy for tv viewing, but okay for music and music. Two questions for discussion. One, do other people have difficulty adjusting their sub for tv viewing? And two, do you have recommendations for setup discs? Other thoughts and/or links re: calibration would be appreciated. I'm in a little 12' x 14' room with wood panelling.