Industrial sound STC and NRC rated curtains

[JRR]

I'm considering enclosing my listening area for noise reduction purposes and acoustic treatment. The noted average STC is 31db but i'd be happy with an additional 10-15db headroom. Any thoughts?

https://amcraftindustrialcurtainwall.com/wp-content/uploads/2021/07/AmCraft-Manufacturing-Acoustic-Single-Barrier-Spec-Sheet.pdf

 

[Frgirard]

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