Have the STR-DA3500ES from Sony with HDMI. I am trying to use the "night mode" when watching a DVD to be able to heard spoken dialogue and then not have the sound effects blast through the speakers. However, this night mode does not seem to help much. I am using left/right front speakers without surround. I am thinking of changing the manual settings on the speakers. I see you can change the distance from 10 feet and I did extend this to 15 feet since we are that far when sitting from the speakers. What about changing the "db" setting? I see it can go negative/positive. Would adjusting this in either direct help my situation? Any other settings with the speakers that I can change? Please let me know. Thanks.