Even if we acknowledge the theoretical point that most of the room walls may not be “perfectly” equal, room distances to loudspeakers and symmetry of the speakers in the room down to the millimeter, is an incontrovertible fact in getting the finest stereo image a particular loudspeaker will allow; given their design capabilities.
Speaker Positioning
I know from speaker position is critical in achieving the best results from a given system. Is there a dynamic way to measure placement of each speaker to make certain they are the exact same distances from back/side wall, cabinets, seating, etc. beyond a measuring tape and listening to the results? Seems to me if minor differences pay large returns, you could be tinkering with this a long time. Thanks for the indulgence.