The pack of six charcoal 2" Studiofoam Wedges Acoustic Absorption Panels from Auralex is recommended for small to medium areas like vocal booths, control rooms, and studios. They effectively kill standing waves and flutter echoes, and when used in conjunction with LENRD or Venus Bass Traps (sold separately), 2" Studiofoam Wedges can successfully tame the full frequency bandwidth in virtually any room. These acoustic panels provide an NRC rating of 0.8 and come in a pack of six 2 x 24 x 48" panels.
Anechoic wedge cut offers high sound absorption
Effectively reduce standing waves and flutter echoes
Provides up to 96 ft2 of coverage
Won't crumble with age