New Fischer & Fischer Audio 670 Speakers : Made Out Of SLATE..

https://www.youtube.com/watch?v=pg9eUTQFkIM 

The music surrounds you like at Live Event 😃😊

"From his extensive studies at a local University, he concluded that SLATE WAS INDEED THE VERY BEST MATERIAL FOR SPEAKER CABINETRY" 😃😊

https://www.soundstageaustralia.com/index.php/reviews/409-fischer-fischer-snsl-370amt-loudspeakers

Here's their Entry Level Speakers made of Slate  😀😊

https://www.youtube.com/watch?v=4ZgFKrefcoM

I have not heard them yet 

These speaker prices will be a little more here in the USA

https://www.auditorium.de/en/manufacturers/fischer-fischer/

The Acora Audio Speakers use Solid-Granite for their speaker cabinets and many Reviewers pick them as the Closest to "Live Music" they have heard.. No Matter the Type of Speakers Too ! So I'm Shocked more Speaker Companies are not using Granite and the BEST "SLATE" for their Speaker Cabinets !🤔🤔 

https://www.theabsolutesound.com/articles/the-2022-florida-audio-expo-alan-taffel/

The all new Fischer & Fischer 270amt Speakers only cost $9000 ! 😃 🤔

 https://stereo-magazine.com/article/fischer-fischer-with-new-270amt

They are coming out with their New Next Generation Slate Speakers right now! 

They show you how slate cabinets are made in this video ! 😃😎

https://www.youtube.com/watch?v=kHTfXR2MGAQ