Dipole Asymmetry


I am considering purchase of a pair of Martin Logan Summit X speakers. In my room, I am somewhat constrained for speaker placement. I could place the speakers about 3-4 feet off the front wall. My main concern is my audio rack would be placed directly behind the left speaker, while there would be nothing placed behind the right speaker. How detrimental would this asymmetry be on sound quality?
imgoodwithtools
Would add that box speakers won't really solve the problem.
Unless you can adjust each speaker individually for "boundary effect"
(as in Revel speakers) you will still have an asymmetry problem.