Elevating subwoofer about two feet off the floor

Interesting find. I can see this working with subs that are either light in weight or not constructed tightly-so that you can control the 'boomyness'.
I wish I could try a pair with my Vandy 2w's and see if they make a difference, but I have already spent too much on my stereo.

I guess the only way to know for sure is to buy a pair and try them with subwoofers. Who know what kind of damping 

Tweak, the bass trap has damping materials, which I believe would cause it to affect the sound, rather than simply elevating it.

Emailists,They have some for sale on another listing, but are higher priced.
http://www.ebay.com/itm/TUBE-TRAP-Room-Treatments-FOR-PICKUP-IN-NYC-/371636446080?hash=item568742238...