Hello, Rod.
I'm going to piggyback on what Rich just posted. I bought the Adelphos speaker from Meniscus - also designed by Jeff Bagby. [I love the Adelphos speakers and I'm very curious about the Kairos.] It's the 'standard cabinet' version of the Kairos. I was both too intimidated to build the Kairos and disturbed by the slanted front baffle. [I'm passed that disturbed reaction and I have located a reliable cabinet builder.]
Several of the kits at Meniscus were designed by Jeff. I believe all of the kits were first designed by different people, presented at G2Gs such as the MWAF, critiqued by peers, etc. before winding up at Meniscus. I'm going to buy the Mandolin kit for my son later this year.
I began this thread because I thought I wanted a 3-way design, but I've backtracked on that idea. I'm now leaning toward the idea of getting a pair of Kairos with upgraded XO parts.
Michael