2. tech-talk
  3. 168003-160047

Spring-Loaded Screw Turns Drywall Into Sound-Absorbing Panels

This looks promising for a 9db reduction in sound escape in homes.

Apparently the spring loaded screw acts as a dampener of sound vibrations that hit a regular dry-wall.In principle, the screw is split in the middle with a spring placed inside. The screw tip goes into the wooden joist, the head holds the plasterboard in place and in between a thin resilient mechanical coupling that prevents the sound waves from advancing is formed.

They have patents and are looking for mass production.https://www.akoustos.se/

I’d certainly consider it for renovations and new builds.
blooloo

Showing 1 response by terry9

terry9
2,243 posts
 
I say Quietrock. I built my 2-channel room with Quietrock 545 - more than an inch thick, with embedded sheet steel.

Not cheap - but cost-effective. The quality of the silence is remarkable - actually, most people DO remark on it as soon as they enter. As a bonus, the company is very good to deal with.

It's important to distinguish sound in the listening room from sound transmitted outside it. It's easy to reduce sound transmission by allowing the drywall to flex or otherwise move. BUT that turns the walls into passive woofers moving out of phase with the speakers, and that's not good.

Quietrock solves both problems. Not cheap - but cost-effective.
More to discover