Maxcast, No Need to remove the baffle, just the woofer. I lined them up as you described without gluing it, just cut it a little larger so they fit snug. They covered most of the inside. I think that this is temporary, when I have time I'm going to try some other material. Not sure the thickness, typical eggcrate foam. I think those who own real marble as well as SM will benefit from some type of insulation. I did read about the Xover upgrade, some more tinkering later.