Take a look at my secondary system. The speakers are close to the corners of a 10x14 room. I have Michael Green Room Tunes panels behind the speakers. They work great.
Note, the speakers I use have controlled directivity of the tweeter. A speaker with wider dispersion may not function as well close to a side wall.
Note, the speakers I use have controlled directivity of the tweeter. A speaker with wider dispersion may not function as well close to a side wall.