Jkphoto, Perhaps the question or my answer was ambiguous. I assumed that he truly meant "beyond the outside boundries" of his speakers which would have included information coming from the outside of the speaker on the plane of the speakers. I suspect we do not really disagree.
For the sake of discussion, assume a triangle configuration with the listening position at the apex of the triangle and the speakers placed on the sides of the triangle so that a line from the listening position passes thru the speaker and extends to the wall behind the speaker. All of the sounds to the right of this line, all the way back to the wall, are the result of in-phase stereo imformation on the recording. The only sound you will hear coming from the left of this speaker (on the line all the way back to the wall) will be the result of out of phase information on the recording.
The point of passing on this info to the poster was to illustrate that the recording plays the major role in the creation of the soundstage, so that he does not needlessly condemn his amp or associated components, including cabling, until he has listened to a reference recording.
