· Super Moderator
This unit has Audyssey. You should use the included mic and run Audyssey (if you haven't already). This should yield better results than any SPL meter. You could then increase a certain channel - say the center if you're having difficulty hearing the dialogue simply by increasing a dB or 2 as indicated earlier. Some people also like to hear more or less surround sound, which you can also increase or decrease after you've run Audyssey.