I heard the Acora Acoustics granite speakers and was pretty impressed.
Betonart Audio Arrivato Speakers...Cabinets made of Cast Concrete!..
Is cast concrete best with box speakers to get the best sound quality?
Not connected in any way.
https://translate.google.com/translate?hl=en&sl=de&u=https://www.lowbeats.de/test-betonart-arrivato-standbox-mit-perfektem-gehaeuse/
Not connected in any way.
https://translate.google.com/translate?hl=en&sl=de&u=https://www.lowbeats.de/test-betonart-arrivato-standbox-mit-perfektem-gehaeuse/