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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?
August 12, 2013
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.