"Large room (20 × 40 x 10). Audio at one end with speakers facing side wall."
I’m envisioning speakers along the 40 foot wall but at one end of the room. So when you sit in the "sweet spot", it sounds to me like there’s a wall to one side, but a whole lot of open space (the rest of the forty foot width of the room) to the other side. Is this correct?
If so, how is the imaging in the sweet spot? I would think having fairly early reflections on one side but not on the other could cause problems.
Is a different configuration feasible?
How important is the sound quality outside of the "sweet spot", like throughout the rest of the room?
"...looking to replace speakers for better sound."
What needs to be improved the most?
Thanks!
Duke