Hey, y'all: My boss recently gave me his old-ish Denon 5.1 Pro Logic receiver (AVR-800) and 27" Mitsu TV (newborn trumps A/V, sadly). I hooked it up to my existing Cambridge Soundworks Ensemble speakers (front) and subwoofer, and recently purchased CS MC50s for the rear and a CS Centerstage center channel. Everything sounds fine until I connect the center channel speaker, whereupon the left-side audio is almost completely killed. Barely audible, even with the master volume cranked and the balance turned all the way to the left. As soon as I disconnect the center channel, sound levels on the left channel return to normal. What gives? Is the Denon not powerful enough to drive the Centerstage? Am I missing a setting? As far as I know, all of the speakers are connected properly to the proper inputs. I write "as far as I know" because I really don't know what the hell I'm doing. I don't have a manual for the Denon, which contains all sorts of mysterious options for VDP/DBS, etc., and I'm a computer geek, dangit, not an audio geek (yet). Any advice greatly appreciated. Thanks, Atticus PS--feel free to laugh at my expense.