Out of phase information on the record/cd will appear to come from beyond the boundaries of the speakers. In phase information will appear only between the speakers - unless you are getting a lot of side wall reflections which can give the illusion of a wider soundfield (you also lose some fine resolution that exists without the reflected information added).
Some manufacturers have made or altered equipment by playing with the phase relationships to make the soundstage seem wider than it can appear in a properly set up system of traditional equipment. This can be accomplished in speakers as well as electronics.
Some manufacturers have made or altered equipment by playing with the phase relationships to make the soundstage seem wider than it can appear in a properly set up system of traditional equipment. This can be accomplished in speakers as well as electronics.