Elevating subwoofer about two feet off the floor

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

My REL's are down firing. I've always found that they sounded less boomy when I moved them out of the corner and more into the center of the room. They tightened up more when placed away from any walls, though it requires a bit more volume in those positions.

Then on a lark, I turned them upside down. Yes, I did place a cutting board on their upturned feet, figuring they would need something to simulate a floor. That's the ticket. tight, precise, invisibly integrated. I heartily endorse anyone to try this and see if it works for you. 

Hey, everyone, I asked this question last week because I could not do the test myself. My speakers were out for repair so the whole system was down. Today, the speakers were returned so I got to work. I raised one of my two SVS subs off the floor 11" inches by setting it on concrete cinder blocks with Herbie's footers under the sub. Personally, I think ASC is on to something. Raising works for me. The bass blended better with rest of the music.

I only posted their photo as an example. If you need a bass trap, then yes, their product would be helpful. But my room already has bass traps, so I just wanted to see what raising the sub would do.

This should not be surprising; smashing a wave into the floor is never optimum. 

I have been using the ASC sub trap for many years. If you own a sub, you owe it to yourself to try one out...I did, and have never looked back. I feel raising the sub off the floor a few feet gives the sub a much better chance of integrating the low frequency's into the room,a more vertical distribution if you will...away from the room boundary of the floor itself,giving a tighter presentation overall.

With the bass trap centered at 70 Hz,the sub also has a chance of being heard without buildup of room modes. A win win if there ever was one.