I bought Paradigm's surrounds, and as suggested in the Paradigm product manual, have set up my 5.1 system with the surrounds in the rear corners because of pathological room geometry. (really, really not fixable, trust me). (The fronts and center are Paradigm too, the sub a downfiring Hsu.)

However, I don't quite think things are right. The speakers sound fine on individual level tests and meter in balance with the other speakers at at 75dB and 85dB(Avia guide to home theatre, and the THX tests that come with "Finding Nemo"). However, the results with movies aren't quite right. Even when listening I have trouble picking out the surrounds. I did program the distance right in the configuration, but was wondering whether the back diagonal placement might need some other compensation because the speakers are not to the left and right of the listening position.

Suggestions for the clueless are most welcome.