Hey Ken,
As I follow this thread, I keep thinking that you may have inadvertently engaged one of those cheesy-sounding "Hall" modes. Virtually all receivers have them, even your old HK. When I use my old HK, I sometimes push the wrong button and the hall effect pops up. . .

Also, in using Audyssey for setup, ignore any "out-of-phase" alerts for the surrounds. Audyssey can't deal with bipolar/dipolar surround speakers like the QS8s.

Alan

Alan Lofft,
Axiom Resident Expert (Retired)