I tried the M5 bookshelf as a center between the 12' spread of my actives at 14' MLP and it was excellent on and off axis but the image was too localized relative to the actives.
What’s the width of your screen? In the pictures I seem to remember your TV looking something like 50-70”.
With a 12’ spread I would suspect that you’d get a unnaturally wide stage with a mid size TV. Sounds coming from a image on the right or left edge would be way outside the screen boundary’s.
You must have upgraded …. to something in the 150-165 inch range
P.S. as I’ve said before I agree with you on the virtual center. It is the most natural sounding solution for one to maybe three seats. Once beyond that you need a real center to anchor sounds to the center for all seats.
