One could attempt a DIY knock-off using something like (4) Eminence Deltalite 2515's, a B&C DE85 2" HF driver matched to a B&C ME60 horn, powered by Hypex Fusion Amps. The raw driver cost per side would be around $1k plus the cost of amplification. The Hypex fusion amps, one per side, would each power the HF/LF sections and provide the XO and equalization capabilities needed. I would look at drum kit hardware to provide the basis for a DIY stand. Would be a cool project if someone had the means.
That being said, I do have respect for the Designers and their "white-glove" delivery and setup philosophy. I am sure they have spent many hours perfecting the design, and for most, DIY is a bit out of reach.