Alan,
thank you for the detailed answer. Do I understand correctly that what was demonstrated in Munich and is below in the picture is a loudspeaker of your production?
Alan,
super nice update of
Sointuva WG Speaker
https://forum.marchaudio.com/index.php?threads/update-to-sointuva-wg-speaker.52/
very similar to Purifi SPK16.
Did you apply experience there with blocked induction in crossover from SPK16...