I wish to thank all of you for the warm welcome. I’ll try to slowly answer all.
Starting from: @glennewdick @noromance I’ve made a new thread about speaker so we can talk about them in the correct section of the forum.
Link:
https://forum.audiogon.com/discussions/grandinote-speaking-about-crossoverless-mach-speakers
Anyway the form the smaller to the bigger array, the concept is always the same. If you have a smaller room you will get a great result with the smaller Mach speaker. If you have a nice big room (obviously more money to spend) you can think to a bigger multi drivers array speaker but the concept is always the same:
No crossover and SRT technology all made by Grandinote. Anyway let’s keep the discussion in the correct thread. So @glennewdick this is not just a "design" thing, we are talking about a technology and concept.