The Kartesianz are coming to get you :)

[Marveloudio]

TLHP has one of the newcomers :

https://en.toutlehautparleur.com/brands-page/kartesian-speakers.html

https://en.toutlehautparleur.com/speaker-kartesian-sub180-vms-8-ohm-181-5-mm.html

There is also an introductory video for the new stuff please use YT translator (toothwheel symbol) for your preferred language :