ScanSpeak Ellipticor-A50-II (anyone build them?)

That looks like a hell of a speaker, and the response is so flat!

Try DIYaudio as a better source for info on DIY projects.

I haven’t heard them, but you’ll have a hard time convincing me that the mid-dome is better than the Illuminator 4.5" middrange. Slightly smaller overall, and better FR and lower extension.  The price delta for the midrange, $2,600 vs. $400 is unbelievable.

I have to say I’m absolutely fascinated by the flower-like arrangement of magnets on the motors. I’ve really wanted to hear that since I first saw it in Focal subwoofers.

@smodtactical are you referring to Troel's version of this kit? If so, you can be rest assured it will sound phenomenal.  While I've designed and built my own speakers in hobby form over 45 hears, and a professional builder prior in my younger years, he takes all things to an entirely different level. Truly enjoy looking over all of his creations fwiw. This particular speaker design is pretty neat, with drool factor  👍