[MatrixDweller]

I'm not sure but I think that Audyssey might take the levels down to make the 0dB on the receiver (volume) become true to reference level (THX level in the 805's case I bet). I have Klipsch RB81 speakers which have a sensitivity of 97dB. My RC62 center is 98dB. My Denon put them all down and the center down 2dB more than the fronts.

It didn't really make sense before to put all the speaker levels down. You'd think that you would want one or more at zero and move the others up or down to compensate. To make them reference level at 0dB actually makes sense.

The sound that Audyssey uses gives a better picture to the processor about the room and the speaker. I could hear major slap echoes from my right surround which is in a corner. I couldn't hear that on my 3805's auto eq's pink noise generator.

Like I stated in my earlier post, the more positions you test for the better the result. Try doing 8 even if you have less seating positions. Just move the mic around in the general listening area. Make sure the first measurement is in the primary seating position at ear height where your head would be. Then do the other seating positions and then maybe move the mic forward a foot or so and repeat. More data gives the processor a better picture of your room.