Guys, I have the same problem over here. Avr E300 Denon Receiver, with Klipsch C-20 (center) and a pair of B-20.
I cant manage to make the center speaker work. And like all you guys, receiver Speaker config has both Fronts and Center ON, Subwoofer OFF. Surround set to NONE. Running Audyssey during setup the center speaker IS recognized.
I've already tried to change to Movie sound mode, no response.
Someone please give me a hand!!!
Thanks