My normal listening position for a pair of A-3PX speakers are:
The pair of speaker’s center to center distance is 6′ and the listening position is 6′ in the front center of the speakers, the equilateral triangle with a small amount of toe-in. Perfect L-R imaging and sense of depth on recordings with that attribute ie. without panning potentiometers.
The room sound/colorization/reflections etc are minimalize to the ears.