Scientists have discovered shape that blocks sound - 03/13/19 12:58 PM
Re: Scientists have discovered shape that blocks sound - 03/14/19 12:51 AM
Interesting
Re: Scientists have discovered shape that blocks sound - 03/14/19 01:38 AM
I want one.
Re: Scientists have discovered shape that blocks sound - 03/30/19 12:29 PM
Bose did that 50 years ago with the 901's. 
Re: Scientists have discovered shape that blocks sound - 03/30/19 04:45 PM
The 901s were the loudest speakers I'd ever heard when I was a teenager. They have the most amazing frequency response: 519Hz and 4843Hz. What other speaker can do THAT?