Audyssey may find your speakers to be full-range and will want them set to LARGE. You don't have to disagree with that, if your new receiver has enough power to run all of your speakers at your desired volume levels. Setting speakers to SMALL lets the subwoofers' amps do most of the heavy lifting, since bass frequencies use most of the power.
Audyssey will set 0 dB as reference-level (75 dB). This is not the same thing as the 70 dB figure you get on a sound pressure meter. "Reference level" means each speaker level must be adjusted so that –30 dBFS band-limited (500 Hz – 2000 Hz) pink noise produces 75 dB sound pressure level at the listening position. In other words, the maximum level you will get from a system set to reference level is 105 dB.
AT&T U-Verse Northeast Ohio
Denon x4000, Samsung LED TV, B&W 704 mains, two M&K subwoofers, Oppo 103, etc.