I'm wondering that what must be done for line arrays is not measuring of individual speakers, but actually measuring rooms.Those who put passive crossovers into their systems may be able to measure the speaker system, but when you are talking about a system that has two 12 inch woofers, 34 three inch midranges, and 60 3/4 dome tweeters, I can't see anything other than measuring the whole room.
Marlboro