| Re: Insulation
And man does it make a difference. I did that with my riser. First time was one sheet of plywood and no stuffing.
Thing acted like a panel resonator and sucked the bass (almost 1.5 octaves) out of the room. When you walked on it, it sounded like a drum.
Add stuffing (R13 insulation, I think) and an extra layer of plywood (overlapping the seams) and the thing is solid and I have my bass back.
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