I will say that I have had to add a couple of db to my M80s and 4dbs to the EP350v3. Audyssey did only a decent job of calibrating the system. Maybe I should run the system again since I have moved and repositioned the M80s a little.
If you moved the speakers after the initial auto setup, then you will need to do the setup again, it is that sensitive. Are you taking the readings with the mic from several seating positions? It appears to help smooth things out, if so this could be why you found you needed to adjust the M80s levels. The sub, well, Audyssey just strives for a flat response with it and has always set mine too low for my liking as well. You may also find that Audyssey will set the M80s to Large allowing for a full range speaker, which in turn, leads them to be set too low trying to keep the bass down to equal the upper end.
And take all of this with a grain of salt as I am very tired and it time for bed. I may want to change this when I get up.
