Is it a 1 for 1 swap between the 1 inch of fiberglass as specified in the 2pi directions and 1 inch of polyester batting? Would an open cell acoustic foam that PE sells work too?
Wayne Parham Messages: 18752 Registered: January 2001
Illuminati (33rd Degree)
If the cells are large enough, open cell foam is much more acoustically transparent than fiberglass insulation. It's what some use for speaker grilles. I think probably the small cell stuff is more absorbent, but I haven't made any measurements to see.