I have recently purchased a 525 and am trying to figure why my satellite receiver running through video 1 analog inputs, Logic 7, or DPLII, seems to sound better than my dvd's do when running through coax1 or opt1 in DD or DTS mode. My center channel sounds kind of dull at times and the sound is not as rich as I expected it to be. I have tried to adjust the treble and bass which I don't like doing but it does'nt solve the problem. Adjusting the OSD levels make it a little louder but the dullness is still there at lower volumes. ANY SUGGESTIONS?