The center image does actually move around depending on the recording. Sometimes one of the instruments will switch sides too,maybe an accident when mixing. I am either cursed or blessed with a square room. One of my speakers is toed out ! slightly and the other one straight ahead. Looks strange but sounds wonderful.Each speaker is pointed towards a doorway.
Speaker Placement and Toe-In
I just spent hours moving my Sopra 2’s with them sitting on the Townshend’s podiums #3. I kept intense measurements. My speakers are 115" from the woofer center to the other speaker woofer. I am sitting at that same distance from the L&R speakers’ middle centerline. They are 37" from the sidewalls to the sidewalls of the speaker.
I used one of those air bladder wedges that are used for lifting car doors and lifted each leg individually of the Townshend podium just enough to slide a furniture mover/disc under each leg.
What I found is that I prefer no Toe-In. That is, I prefer the speakers straight out into the room.
At least at this moment I am content.
ozzy