I just build one of this for about $400 total.
I bought the case and all cables and connectors needed from ghentaudio for $130:
https://www.ghentaudio.com/kit/2180a-2.html
and bought the 252MP from Ebay for about $250.
Everything were put together in less than one hour and it works great. It has very smooth and sweet sound for the tweeters, but not so great for mid and bass drivers. So I am using it for the tweeters in a bi-amping set up.
I bought the case and all cables and connectors needed from ghentaudio for $130:
https://www.ghentaudio.com/kit/2180a-2.html
and bought the 252MP from Ebay for about $250.
Everything were put together in less than one hour and it works great. It has very smooth and sweet sound for the tweeters, but not so great for mid and bass drivers. So I am using it for the tweeters in a bi-amping set up.