Johnk, I found in a menu somewhere in the GUI where it showed the crossovers that were assigned by the audessey eq. It showed LFE+main as 80hz, so apparently this 'arbitrary' crossover is adjustable... I guess I just over looked it.

Still not sure why the denon will not use my sub with a stereo source such as an audio cd through my Hd DVD player.

Sorry, I seem to have gotten this thread off track a bit, focusing more on my specific problems then general denon 3808 questions.

sorry mdrew, great review by the way.

-David