"La voix du luthier" coneless acoustic speakers for electronic instruments

They will be showing at both Synthfest France ( thread ) in a week, and then after that at Superbooth ( thread ), the middle of May.

So many fascinating options with these resonators. They become part of the sound, and part of the experience in smaller venues.

How about using them with something like the ET-5 from Therevox ? ( thread )