the way the pairs of tweets and mids fire to the left/right at an angle. If they are TL's, I'm curious about the "tuned port" shown on the rear. Can't wait for you to open one up, shoot some pics, and fill us in on the details!:) I always found the sound of such speakers, where lots of reflected sound field is generated, to be very alluring sonically. But imaging was usually less precise, and placement was MORE critical, not less so as they state. Hey, are the "ambient" drivers wired IN, or OUT, of phase with the "mains"? Samwife adopted the allison enclosure as a plant stand after I "gutted" it in the interest of science...still have the tweets and mids, woofs needed new surrounds(and one was 4, one 8 ohms!?) and the 47uf caps for my zobels came from the xover board:)