Nothing scientific here. I put my Advents where the speaker cable reached. They disappear relative to distance back I am. One advantage of a electric wheelchair, precise location of the Sweetspot.
Speakers "Disappearing"
I have read a lot about speakers "disappearing" so that one can't tell from where the sound is emanating. But, what about all the stereo tunes where the recordiing engineer intentionally pans the music to come from one side or the other? Can the speakers be made to "disappear" in that situation? Or, is it just the nature of the particular recording?