B&W recommends a maximum power of 120W for the 805S (and 805D and N805), and a Denon AVR rated at 7 x 135W should be able to put out more than 135W when driving 2 channels (see the Audioholics measurements of the AVR-4810CI here). So I wonder if there's not something else causing the lack of loudness. Maybe Audyssey has dialed the gain back too far? Or perhaps there's something else wrong with that particular AVR.
7/23/10 at 7:14am