Speaker distance

Heh-heh

Quad ESL 57.
6’6" apart from panel centers.
Toed in so centers point at ears.
(36" inside from front wall.
47" outside from front wall.)
>36" from side walls.
7’2" to ears from speaker centers.
18" custom stands. Center of speaker panels level with ears.

Magnepan 1.7i's-7' apart, 40" from back wall, 72" from each side wall, 12' from listening position, tweeter on outside, slight toe in.
MMG's as side surround (for multi channel music and movies)-24" from side walls, 10' from listening position. 
9 foot ceilings , no "commercial" room treatments

Speakers on ends of long hallway 37 feet apart with listening  position on a Viennese Hassock between them in what basically is a tunnel covered with animal trophy heads with hissing gaslights and locked shoji doors. Great for those shoe gaze parties featuring people claiming to be your cousins.