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Activated Carbon vs. Mineral Wool in BDA
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February 16, 2019 - 5:13 pm
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Dennis Foley said
P, Yes, use material that has a density of at least 2 lbs / cu. ft. Make sure you wear a mask when working with this material. It is toxic.  

Dennis Foley said
M, You can use 200 kg / m3. Metal boards will work. make sure perforations are min. 6 mm on 25 mm centers.  

Hi Dennis, can you please clarify what density to use? The specified densities are not the same, 2 lb/ft3 to kg/m3 = 32.03693 kg/m3.

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Chief Acoustics Engineer
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February 18, 2019 - 8:27 am
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D, Use the larger density.

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February 19, 2019 - 1:30 pm
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Hi Dennis – I just wanted to check if you have any other shipping options for your acoustic foam. I’m in Australia and the distance and our weak dollar isn’t helping! Thanks ~ Mark

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February 19, 2019 - 3:58 pm
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C, How many pieces do you require? What size?

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February 19, 2019 - 6:28 pm
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I was looking the the 25 x 18.5 x 2 [USD $97]… but I just realised that I am in the process of making 2 BDA’s, so I would need 2 packs… which may not be feasible…

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