I thought Black Hawk Down sounded just fine on my Onkyo 797 at about the 50 range. Then again I live in an apartment and much more than that will get the neighbors in an uproar. I rarely need to turn a movie past 50 to get clear sound out of DVD movies and great bass (not the kind that rattle you, but good). No problems with voices from the center or surround effects.

Room: 15' x 15' with a concrete floor

b_man