Ibmack - your understanding is the same as mine and I can’t explain it. My friend (audio engineer) couldn’t explain it either but did say the processing circuitry in the receiver and subwoofer typically ad 5-10 feet to the actual physical distance of the subwoofer. I know that doesn’t explain why the Auto Setup was adding about `18 feet to mine or why cutting it to about 10 feet noticeably improved the sound of the bass.
One thing I can say is that using Audyssey makes voices, especially male voices sound very hollow and tinny in my first room with no noticeable benefit. In the second room I tried it voices still sounded tinny but less so, however this time the ambient sound field did sound more spacious and lifelike. I copied over the curve to the manual EQ and in the 64, 125 and 250 bands Audyssey was setting the channels to anywhere from -3dB to -9dB which explained to me the tinny male voices.
And yes I’ve followed the FAQ and did everything the great minds here could suggest and still ended up with the same results. So I leave Audyssey off and with the Auto Setup I follow President Regan’s advice “Trust but verify.”
3M80 2M22 6QS8 2M2 1EP500 Sony BDP-S590 Panny-7000 Onkyo-3007 Carada-134 Xbox Buttkicker AS-EQ1