Elevating subwoofer about two feet off the floor

Wow I never heard of this product but thanks for bringing it up.
When I first got my velodyne dd10plus subs (I also sell them) I had a bit of trouble getting them to blend with my TAD CR1’S, which have very articulate bass. I had a pair of sisitrum stands 22" tall that used to use for a previous speaker (the TAD’s have their own stand) and on a lark decided to try them under the subs. No one could tell me if they would work or not since the subs were designed with the 6db gain the floor provides and in fact I was discouraged from doing so. I found the stands to be of great benefit and now have good blend with the mains, making much more in the room realism. And late night lowered level listening is enhanced by bumping up the subs level or using a lesser slope.
If anyone in the NY area wants to hear this unusual set up, PM me.  

Glad to know I'm not the only one who hears a benefit from raising the subs.  

Hmm tweak you must be in NYC since they were only doing local pick up.   I might have gone for these myself if I had seen them.