Recommended for medium to large areas like concert halls, gymnasiums and churches, rooms with pronounced low frequency problems or where sonic accuracy is mandatory and maximum acoustic absorption is required.

The 4" Studiofoam Pyramid-24 panel, having four sides exposed on each pyramid, provides more sound wave diffusion, desirable in some spaces and yielding less overall dryness than 4" Studiofoam Wedges.

Great looks and great sound control for just about any application

Supplies extra diffusion due to four-sided geometry

Pyramid cut offers versatility during installation - many different shapes and sizes are possible and provides virtually seamless installation

Class B flame retardancy

Will not crumble with age

Related Questions and Answers

Q: 1. Howdy, B&H'ers! My first question today is whether these would fit into the recessed lugs of a Canon EOS Rebel T5i? (If it does fit, I expect that would be a tight fit.)Second: If they will fit in the T5i, will the not very beveled edge of it's metal lugs cut into the plastic of these connectors? Thanks in advance! (Gratitude in arrears for several great answers on other products!)

A: I use them on my canon 70D and have had no problem with them. They go in tight and the lugs have not damaged them at all. I go strapless 80% of the time and this is the best option I could find for quick strap detachment.

Q: 2. How many does this come with?

A: It's one for $4.95. They also sell 24 packs for $109. I bought four individual tiles.

Q: 3. Where are these placed to start improving your sound system?

A: The Auralex LENRD Bass Traps are intended for placement in room corners and wall/ceiling junctures.

Q: 4. How do these attach to wall?

A: Greetings Kelley, There are a few options for adhering them to the wall. FoamTak Spray adhesive and TubeTak Pro adhesive applied with a caulk gun. These options are permanent. For a more temporary application you could use the adhesives to glue the Wedgies to a cardboard or poster board as a backing. Then hang them as a group on picture frame hooks by carefully piercing the backing. They can also be hung with finishing nails tacked carefully through the Studiofoam at an angle without going all the way through. As mentioned by a community member velcro strips can be used but sometimes fail in sticking to the Studiofoam. Best regards, Kevin

Q: 5. what is the R value of 4" and can it be used in exterior application?

A: The R value is 4.20, and is not intended for outside installations. https://www.auralex.com/product/mineral-fiber-insulation/

Q: 6. Is this for 14 panels (as it says 14 pieces) or just 1 panel that comes in 14 pieces you need to put together?

A: Yes, this item (B&H # AUSF11142BU) includes 14 of the Auralex 2" SonoFlat Panels in burgundy finish.

Q: 7. Hello, can these be used to soundproof windows?

A: The Auralex 2 x 24 x 24" Studiofoam Wedge Panels (Pair, Charcoal) is not soundproofing. It's designed to cut down on reflections on flat walls.

Q: 8. How do you mount these?

A: You can use adhesive, sticky tabs, or impaler clips. https://www.bhphotovideo.com/c/product/204873-REG/Auralex_FTSPRAY_Foamtak_Spray_Adhesive.html https://www.bhphotovideo.com/c/product/1250920-REG/auralex_ezstickpro_ez_stick_pro_tabs_pack.html https://www.bhphotovideo.com/c/product/1501743-REG/auralex_af2_extended_2_impaling.html

Q: 9. Are these panels fire rated? What is the rating?

A: The Auralex Studio Starter Kit has a fire rating of UL 94 HF-1.

Q: 10. What are the NRC details for this?

A: The Auralex Studiofoam Wedgies - Overall NRC 0.75.