I put the example the center, because I assumed that most of people are not splitting the symmetrical pairs, but indeed I'm doing it, due to the disparity on response I have on some of them.
I'm just asking if someone knows what the self support ranges does, because as I shown, the calculated target response and spread is wildly different based on what value you put there. It's not documented either AFAIK on their website.
My assumption is that this might be for speakers that are not grouped the actual frequencies you want the speaker to use on regular use (not as supporter), but obviously this is a really wild assumption.