
A quick update on this, I re-calibrated the Denon AVR-1909 this weekend, and found that Audyssey, for some unknown reason, was setting the level of the center channel too low by 4.5 dB, confirmed with my SPL meter. All other levels were fine, and the distance for the CC was fine as well. I did the calibration 3 times to confirm, and all 3 times it was 4.5dB plus or minus 0.3 dB. I am guessing this is not the only problem, as whatever is wrong is probably compounded in all other aspects of the calibration (i.e. EQ), but my intuition says that there is something terribly wrong with most of the center channel calculations, with the exception of the distance calculation.