Just thought of something that seems obvious, but maybe not....Is it important for all the speakers in the array to be the same size and brand?
I mean suppose you upheld the c-to-c but some of them were Sammi's and some were Daytons, and suppose you made a woofer array where the bottom speaker was a 12 incher but all the ones above it were 7 inchers.
That seems crazy, but if you are using electronic crossovers, would it be?
Marlboro