After investigating a little more I discovered that the reason it sounds lower is that the center channel shuts off. The display on the 1050 still shows it being there. I then toggled through all the qudio modes and Then I couldn't get it to do it again. I was either in Natural or Surround mode to begin with. Digital optical 2 input (AUX) and a DSP signal. Also, Why is it that when I toggle thru the audio modes sometimes the Natural, Jazz, Hall, etc, modes are available and other times they're not? I assume it's due to the input signal but I get confused by all these different formats. I have a 6.1 setup, but with no subwoofer at this time. What are the best audio modes for DVD's and for regular SD tv?