I have I have had a similar experience, and not around an audio show...although, Asia or Europe may have been hosting; in that, I left three voicemails over a two month span , but received no callback.
Madisound does supply Accuton drivers
https://www.madisoundspeakerstore.com/welcome.php
Good luck..agree, .great speakers
Madisound does supply Accuton drivers
https://www.madisoundspeakerstore.com/welcome.php
Good luck..agree, .great speakers