I tried concrete, and the sound was weighty and too hard. I wanted something more airy. So now trying styrofoam.
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
https://www.concrete-audio.com//en/#lautsprecher
Not connected with this company in any way