Speakers "Disappearing"

You want speakers to disappear? Narrow baffles and small drivers.

Speakers with a precise image? Small drivers and single point source, coaxial or single driver. 

To make a generalization, the size of your midrange drivers has quite a bit to do with it.  I liked the tone that came from the single 10" drivers on my Zu Omens, but a cone that big will never "disappear."  I could always close my eyes and know that the good tone I was hearing came from those two drivers in my room.

My B&Ws, by contrast, have double 5" midrange drivers; on good recordings, I close my eyes and perceive musicians playing instruments in space, not speakers pushing soundwaves from two points in my room.

So such a phenomenon does exist. and all this time I blamed my wife.

I listen to and have this effect every day regardless of recording or music genre thanks to "The Art of Rational Speaker Placement". My website - myspeakersetup.com for articles and more info.

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.