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DIY acoustic panels with rockwool and a fan

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Re: DIY acoustic panels with rockwool and a fan

Postby Nyiregyhazi » Thu Jun 18, 2020 6:42 pm

I did a bit of digging and the guy in the video is a genuine part of the official EU committee. You'll see his name on here.

https://www.eesc.europa.eu/en/our-work/ ... fence-fund

As you say there are unknowns. But it would be a really bizzare conspiracy if they are going to quite so much effort to spread misinformation. I'd find it harder to write off the story altogether as some malicious Internet conspiracy than to think that there's something in the story. I don't believe it's as bad as asbestos, but the unknowns are very real and what they say about testing having been done without the chemicals is at least worth wondering about.
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Re: DIY acoustic panels with rockwool and a fan

Postby Nyiregyhazi » Thu Jun 18, 2020 6:47 pm

Also, I'm not so worried about fibers in a building. However, when has anyone actually tested how effectively a single layer of fabric isolates? It's just an audio industry assumption, not part of the official safety advice.

Even if I fully trust the official testing, what testing has been done to show that some cloth makes it more like having it sealed away in walls, than like being directly exposed (which is when they advise much more extreme safety precautions)? There are quite a few assumptions involved even to get from the official line to saying its safe behind a cloth.
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Re: DIY acoustic panels with rockwool and a fan

Postby cyrano.mac » Fri Jun 19, 2020 9:49 pm

Last office I did, a few years ago, had environmental testing, including fibers after being acoustically treated.

If there was one source to worry about, it was air-conditioning.

Lots of people complaining about headaches before, a lot less after. The people working in there were traders. On the phone for roughly ten hours a day.
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Re: DIY acoustic panels with rockwool and a fan

Postby arik livnat » Tue Sep 29, 2020 9:37 pm

Hi:)
There are all kinds of rock wool. Stiff wool is more durable and less crumbles in the air. In addition, it is advisable to coat the rock wool with a breathable fabric but one that preserves the rock wool. I used Knauf Hard board panels. They are German fabrication they are well made. I used them for different panels in my studio, you are welcome to watch the process.
I'm a musician myself, a sax player and I did some absorption tests with the panels. I did some DIY videos to show my process.
feel free to comment your thoughts:)

https://youtu.be/POgVZ1k7LNg

https://youtu.be/GiM3KI-tkmM

https://youtu.be/4yRySn_IIEw

https://youtu.be/YlaBZQPSkK8
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Re: DIY acoustic panels with rockwool and a fan

Postby Hugh Robjohns » Wed Sep 30, 2020 3:10 pm

arik livnat wrote:...feel free to comment your thoughts...

I got 55 seconds into the first video and sprayed tea all over the screen with the extraordinary levels comparison technique and figures... :lol:

The panels look great, and I'm sure they work well... but if you're going to try and get technical it needs to be done rather better than that!

I'd have started without the screen in place, but with a visible microphone and a high-ish (but not clipping!) recording level. The you could wheel the gobo screen in place to observe the greatly reduced level.... and we'd all have been deeply impressed...
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