XL-Pro Subwoofer Acoustic Sound Isolation Platform (for most Subwoofers) 13.75" x 15" Inch | High Density Foam Stand for Significant Sound Improvement and Vibration Control

I bought it to stop the powerful 15” and 400 RMS Watt sub to travel when playing. That worked beautifully. Also, the little cuscion provided helps to get rid of, or significantly reduce, the rest of the room to vibrate excited by the contact sub-floor. That little investment is worth any penny.

My pad under the subwoofer works great! I live in a condo and this keeps the sound in the room. It was very nice looking—just as advertised!

Good for floor subwoofers, but it caused some problems with my robot vaccuum jumping up the side of it. The sloped sides just let it ramp up and smack into the subwoofer. I bought another and flipped it over, seems to work well so my vaccuum can't ramp up the side anymore.

This is nothing but a piece of foam, and a lousy one at that. This is far too soft to support any subwoofer that I have had experience with. This is a complete rip-off and should NOT be allowed on Amazon. I see now that they offer "no returns", and now I know why. A complete waste of money, and I feel completely taken advantage of!! Shame on Amazon for allowing this!!

Best thing ever created I have my two Klipsch 120SW’s on two of these and it made my subs sound a ton better than just only on a floor will definitely recommend to buy the only issue I have is the length is kind of short but my sub sit on these good and sound really great

I needed something; it's better than nothing but at $26 bucks a little expensive.

I was a bit skeptical at first when I opened the package, I was expecting a harder foam. I put them under a pair of 48 lb floor speakers and they held up fine. I was looking for a product to raise my speaker off the carpet and this worked perfectly.

Doesn’t stop the vibrations at all. Simply a foam cut in that shape.