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

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/

@rick2000 

The Acora speaks perfectly to an enclosure being rigid.

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

Besides Acora in granite there are also speakers made of concrete like Rauna.

https://www.rauna.com/

Wilson, Magico, Rockport and others also has pretty stiff boxes made of different materials.