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Wooden blinds vs cellular shades for acoustics

Standard old school advice for large window acoustical treatment seems to be "heavy draperies". Some cellular shades (Hunter Douglas, Bali) have high factory-rated NRC (0.60 or better). That's about the same for what little I've found for draperies.

Recently, I heard that partially-open wooden blinds are best for acoustics, acting through diffusion, rather than absorption. Opinions? Experiences?

Thanks
leeofb

Showing 1 response by jgiacalo

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jgiacalo
446 posts
 
I have a window wall measuring 8'x 18' opposite my speakers with four panels of metal mini-blinds. I alternate the blinds panels with slant-up and slant-down hoping to break-up and redirect reflections.
I've also placed several 2" squares of DynaMat on each of the four double-pane windows in hopes of reducing glass vibrations.
I have no idea if this works although it sounds reasonable that it should.
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