I've inherited the tech in a venue with an almost 180° stage. They have 3 RCF line arrays flown from up high, one in the center and two out wider, rotated 45° outward. Currently, the contractor who hung them just ran a splitter from the left array to the center array, so we don't really have proper stereo. I intend to correct this, but I'm curious...
Intuition tells me to just run a 3rd output up to the center array, and sum the main L/R into a center matrix. The issue that I think I'll run into is that we usually have stereo instruments (keys, EG amp modelers, you get it), and summing them to mono will cause phasing issues in the mids, leading to a less consistent tune across the auditorium.
So I'm thinking, the people in the center (and the FOH position) are already used to getting one side of the main L/R by itself, so what if instead of summing them for a center array, I run 3 separate outs to each array but assign them to L, R, L respectively?
Is there a widely accepted way to run 3 arrays like this?
(And no, I'm not committing the cardinal sin of hard-panning elements to one side or the other. Stereo inputs are just there for width, for those within the splay of two arrays, anyway.)