Two years after purchasing my Denon AVR-4520i, I discovered that the microphone was bad (more accurately, JimP discovered it). I knew the microphone was iffy a year back because it developed a need to be flicked sometimes to get it to work properly (or the readings were low by 20dbs), but I assumed once it worked the readings would be accurate. Bad assumption. After borrowing Jim's to test, mine is definitely out of alignment. Ordering a new one.
Two years listening to crappy audio on movies because this stupid mike. No wonder turning Audyssey off made it sound better. FYI - be aware....
Arrg...