Concrete Audio Speakers...Speaker Enclosures made out of Concrete ?..


Could concrete speaker enclosures give us the most realistic sound ? 
 
https://www.concrete-audio.com//en/#lautsprecher  

 Not connected with this company in any way
highend666
Wow,guys here are talking about Bose 901s here...what do they have to do with these speakers  ,other than a different idea.
Because they are not thick enough and they are too resonant. You want something that doesn't ring when you tap it. 
I am not talking about these speakers specifically but rather concrete enclosures in general. Are you suggesting that any thickness of concrete will ring? Hard for me to think of a better, relatively inexpensive material to use in a speaker. I will await your solution and response. 
If it was so good most companies would do it. Those companies that have done it haven’t been successful.

A concrete wall could be used but not a box.