In reply to:
With my mains 9-10' apart and me 13' away 2 channel sounds great, HT great.
Very strange... my measurements are nearly the same (10' between, 13' away) and I find straight stereo sounds a bit awkward. It's all perception I'm sure though, since my last stereo setup (as a late teen) was about the same and seemed fine to me then, think I've gotten used to hearing a centre channel now and I miss it when it's not there.
Strangely, at work, I work almost exclusively with single channel and don't miss the stereo separation.
Bren R.
