I have two K-77-D tweeters and two K-55-X mids (with Altec 811B's horns) to use in some custom built enclosures I'm building. The tweeters and the mids came from my AK-5 Khorns. I'm looking for recommendations on the XOs between these components. Is there something other than Crites out there? With the addition of 2 good subs, I should have something close to a second set of Khorns.