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I have seen people drill holes in the frames they build for acoustic foam . Typically, several 1 1/4" holes are spaced on 4" centers along the perimeter of 1" x 3" select pine board. Does anyone know if these air holes help airflow and improve the acoustic performance of the foam mounted in the frame?
Nonsense. Its always about surface area coverage. Drilling a few holes will not increase that variable.
I still think adding the holes, although time consuming, labor intensive and may effect frame strength, would slightly increase the surface area of the exposed foam . Similar to the improvements seen when acoustic material is suspended as a cloud. I think it may help, but may cause more problems than its worth. I've seen a few guys do it, but after thinking about, it's definitely not cost effective, so I doubt I'll try it.
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