The literature for my Denon AVR-3200 says: "When speaker systems A and B are use (sic) separately, speakers with an impedance of from (sic) 8 to 16 . . . ohms can be connected for use as front and center speakers." But the specifications give a rating for dynamic power at 8, 4 and 2 ohms. Without realizing it all this time, I have been driving my fronts which are "6-ohms Nominal, 4-ohms minimum." I'm confused... ------------------ You don't need a centre channel.