That wall of sound lasted less than eight months. Not for the quality and innovation rather the logistical aspect. The wiki is fairly informative.
Long before Harman JBL was open and helpful to DIY and their developments were substantial. If your new to horns it would be smart to compare a dynamic and a horn speaker in the same room for your own experience.
I just heard a demo of the Meyer Sound Labs Amie powered 2 way.
Regardless of your speaker choice a properly located processing subwoofer system is what will get you the extra 3dB needed to portray Lesh's low B or the tuning of Tony Williams' 18" Gretsch creating that more live effect.
I've never used Audio Kinesis but I've used four Velodyne DD subs to a similar affect. Far more affordable the Swarm is a popular option that will partner with many different types of speaker systems and manage most any rooms peculiarities you might encounter.
Beware of speakers with built in self powered subs. Speakers are located for sound staging. The room dictates were the subwoofers should be located.
Para diddle y dee, good luck with your search.