Good work to mrspeakers and Hennyo!
I tried acoustic foam to the inside of the baffle, in conjunction with the transpore tape, and felt it sucked out a lot of the sub-bass. However, I didn't even think to try it with the stiff craft foam. I'm looking forward to giving it a shot when I get home. Now that I have my LCDs back, I'd be happy to do some comparisons this weekend.
Thanks again for sharing, you guys.