AMT/Ribbon Coax Driver - Overview wanted

[tiefbassuebertr]

I am looking for such drivers for diy projects. Additional I am looking for monitors as finished product both for studio and home audio applications.
Best thanks for an advice.
On the web I have found only this finished devices but no coax driver as parts:

1) meroVinger decOrus AMT Koax
https://www.hifi12a.de/Merovinger-decOrus-AMT-Koax-aktiver-DSP-Kompaktlautsprecher-Vorfuehrgeraet
https://www.hifi12a.de/epages/61785497.sf/en_IE/?ObjectPath=/Shops/61785497/Products/50006001-nml
meroVinger - Aktivlautsprecher - Seite 9 - aktives-hoeren.de
Test Lautsprecher Stereo - meroVinger decOrus AMT Koax - Seite 1

2) ELAC VX-JET series
Test: Elac FS 507 VX-JET - Lautsprecher - Testbericht fairaudio
http://www.audiostereo.ro/ELAC_technology.html#ELAC_VX-JET
https://www.connect.de/testbericht/elac-fs-507-vx-jet-im-test-1333702.html

3) Fluid-Audio FPX7
https://www.fluidaudio.com/fpx7.html
https://www.musik-produktiv.de/fluid-audio-fpx7.html
https://audioxpress.com/news/Fluid-...Reference-Monitor-with-Coaxial-Ribbon-Tweeter

 

[puppet]

After I saw Fluids monitor I started a search for parts, too. Ran across this website. I know absolutely nothing about them except that they seem to offer quite a few shapes/sizes of AMT's. A guy might be able to make one work in a coaxial arrangement.
Ribbon Tweeter and... Archives - Sounderlink professional pro drivers and speakers

 

[KJ_Knowles]

Radian have a line of ribbon (planar, really) coaxial drivers that look interesting, but I know of no designs using them at this time.

Coaxial-Ribbon - Radian Audio