Hmmm. interesting.
The tonal balance probably becomes a bit warmer, as each side's output will combine in-phase at low frequencies, while as Shadorne noted you will get comb-filtering (partial cancellation) at higher frequencies.
Comb filtering often looks a lot worse than it sounds; apparently the ear-brain mechanism is relatively tolerant of it.
Not knowing the exact geometry of the setup I can only speculate, but it's possible that the output from the outer speakers is arriving late enough that directional cues from its output are suppressed by the precedence effect. If so, imaging could be holding up quite well. Timbre may be richer and more vivid as well.
Duke
dealer/manufacturer
The tonal balance probably becomes a bit warmer, as each side's output will combine in-phase at low frequencies, while as Shadorne noted you will get comb-filtering (partial cancellation) at higher frequencies.
Comb filtering often looks a lot worse than it sounds; apparently the ear-brain mechanism is relatively tolerant of it.
Not knowing the exact geometry of the setup I can only speculate, but it's possible that the output from the outer speakers is arriving late enough that directional cues from its output are suppressed by the precedence effect. If so, imaging could be holding up quite well. Timbre may be richer and more vivid as well.
Duke
dealer/manufacturer