Interesting question as I am struggling with this very issue my setup. For me, diasappearing means that I do not hear anything directly from the speakers. In my friend's setup, the soundstage is taller than his speakers. Because of this, I am able to hear things behind and to the sides of the speakers, giving a great sense of depth and width. Rarely do i hear anything from the speakers themselves. Conversely, in my setup, my soundstage is right at the tweeter height. Because of this, I never hear anything that is deeper or behind the speakers. I am not sure why my soundstage is so low. I know my speakers are capable of a higher soundstage since I heard them at my dealer. Anyway, disappearing speakers do add a lot to the sense of dimensionality.
Speaker disappearing act?
There's new $25k per pair speaker, that according to everyone who matters, disappears? I've heard this disappearing act before, but what, if any does it have to do with the quality of the sound? If you're blind, or close your eyes when you listen to music, does that eliminate the need for a total disappearing act? I know what they mean by speakers "disappearing" but can it be overkill in the descriptive sense, considering there are oodles of other factors that are important in describing a speaker/quality of sound. Have you ever listened to a pair of speakers that are drop dead amazing, but when you open your eyes they may not be the purest "disappearing" act you thought? Does that matter?