Clarification: Only the L/R are set to large or full range. There is not much difference in S/Q between the two settings. No difference in soundstage.

As I said, I was concerned at first, but I don't think this is a problem with the setup. I think I am hearing something in the material as this is the only time I have heard the noise. Plenty of other soundtracks with huge bass and punch. Only this soundtrack at this particular time.