I am wondering if I can use 3" open cell foam insulation instead of R11 or R13 fiberglass in my 2 PI speakers. I already have a few sheets of it, and I hate working with fiberglass. If anybody knows if it will work I would love to hear from you. Thanks.
Wayne Parham Messages: 18784 Registered: January 2001
Illuminati (33rd Degree)
Sorry, I can't comment on the product you have in comparison with R11 and R13. I use some closed cell foam products as a fill and they work quite well, acting as a solid mass and a damper. But I don't know if the product you are talking about will work as a suitable replacement for R11 or R13 in this application. I suppose it couldn't hurt to try. For a test - Listen to the port closely with your ear. The midrange should sound distinctly muffled, and as absent as possible. If that isn't the case, then the foam product isn't sufficient and you should replace it. But if the midrange is sufficiently attenuated, you're good to go.
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