Foam Diffuser

Fairly cheap. I used these in front of my sound systems as a bass trap. And even though this isn’t a professional tool for testing the audio the flat line says enough. This with a few other products I managed to drop 12-18 decibels down my hallway and reduce the majority of bass within 20 feet. I plan to try some corner pieces as well. I love the styling and bought them specifically to catch at the angle I needed to catch audio at an angle due to difficult to place environment. I used them in my window and the sound barely leaks out and it helped insulate the window. Thickeness was as expected. A few had some curling but most brands do. I plan to buy a few more for higher angles of the room. I’m a fan of use the least panels possible. And strategically place them. If you do. Handle the thickness this might be ideal for you.

These are great. It requires a bit of persistence to get them unshrunk, but really not too bad. They are much better quality than I expected, look great, and are easy to use with some adhesive spray.

You get a whopping twelve of these things for only $35 bucks - that's a solid value. And because they have a diffuse pattern and are 3 inches thick, they help to both scatter and absorb sound waves. And when multiple panels are combined in a staggered way, they look very cool! Now, keep your expectations in check. These things won't absorb a ton of low-end bass, but they will do a solid job on frequencies above 1K. Even at frequencies below 1K, there is still some absorption, just much less. Overall, these panels have helped improve the sound in my home theater. I'm currently using them on my ceiling to mitigate any reflection points there. I've noticed my theater has slightly less reverb when listening to dialogue. In the end, getting really cool looking panels and some acoustic improvement for only $35 bucks is a win win in my book.

Very thin and the edges were weird on two of the four. Very very cheaply made.

I bought these for a movie theater room I just completed. Let me start by saying they work. However I can’t get them to stay up on the wall. I went to the big box store and bought their only double back tape. They were to heavy I guess. Then in the description it shows a spray adhesive. I went back to the same box store. The was leaving with gorilla glue spray and read the label before I checked out and it says not for styrofoam. So I bought the other 3m brand. It barely works. So I found a very thin double back tape I had and it seems to hold for now. I would give it 5 star because it does work. Just can’t find a way to get them to stay up. Maybe if they included in the package something that they now works for the thicker foam.

I noticed others had some issues with their foam pads coming in flat and them not fluffing over time. As you can see in my picture I had the same thing happening with a few of my foam pads. To resolve this very minor issue I just put them under running water where they were still pinched, gave them a few squeezes to absorb some water and take their full shape, then threw them in the drier 4 pads at a time on medium to high heat for about 45-50 minutes and they came out perfectly fluffed. All in all the quality of the material is great and I am very pleased with how thick they are. Very good to place in the lower half of a room to be used specially for bass absorption while thinner wedges should be used in upper halves of a room for high frequency absorption. Keep in mind, these aren’t meant to cancel sound, only absorb and dampen deeper bass sounds/frequencies but they work great. I used the adhesive dots, 5 to each panel as shown in my picture, and then pressed them to the wall about 3-5 seconds each at the points where the dots are placed and they have all been holding up beautifully. The adhesive dots are also available for purchase here on Amazon. Hope this helps!

I thought it was supposed to be odorless and non toxic

Wonderful quality and value, but you're going to have to put some elbow grease into massaging the corners to get them back to shape. They're not just going to automatically warp back right themselves.

Nothing like the picture and low quality. You can get it elsewhere for cheaper.