Elevating subwoofer about two feet off the floor

The farther the subwoofer is off the floor the less the magnitude of vibration force the subwoofer transmits to the floor and thus to electonics, turntables, CD players, etc.

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 

Actually, the question is whether raising the subwoofer off the floor about 2' will make it sound better. No need to purchase the bass trap that ASC is selling.

Another case of selling people something they likely don't need…bass naturally bounces around the room, and that's a reality that I personally don't mind as it sounds natural to me. If it doesn't, I turn my subs up or down a little.

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