2" panels do not make very good broadband absorbers, 6 to 8 inches with an air gap behind makes a much better absorber that is less frequency selective.
after many years of rockwool, I switched to PET wool. that stuff wont detirioate ever
Looks great! I like the neutral color. I have some fabric samples on the way from GIK and some from Acoustimac.
I'm also curious about some fabric from Guilford of Maine called Whisper. From what I understand their FR701 isn't as transparent as other fabrics, although nobody ever seems to specify what those other fabrics are. Regardless, the Whisper looks to perform a bit better than FR701:
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Great work - congratulations. But if I may - the fabric doesn't need to be acoustically transparent. All it needs to be is not reflective at higher frequencies. "Not acoustically transparent" means it absorbs some of the energy as it passes through - which is a good thing for a panel covering.I was going to use a microsuede fabric from another supplier but the literature which came with their samples mentioned that it was less acoustically transparent than other fabrics. Sort of defeats the purpose! I suspect the same goes for the printed art panels.
I guess that makes sense!Great work - congratulations. But if I may - the fabric doesn't need to be acoustically transparent. All it needs to be is not reflective at higher frequencies. "Not acoustically transparent" means it absorbs some of the energy as it passes through - which is a good thing for a panel covering.
All it needs to be is not reflective at higher frequencies. "Not acoustically transparent" means it absorbs some of the energy as it passes through - which is a good thing for a panel covering.
on a sidenote, reflective fabric can be beneficial for panels outside of the direct path first reflection points. the room will be less dead
I strongly suspect that for a listening room, diffusion is more important than dampening