The 12-pack of Studiofoam Pyramid-22 from Auralex contains 2" thick, 2 x 2' acoustic foam panels that can treat small to medium-sized areas including iso booths, studios, rehearsal rooms (any instrument except drums), and home theaters. The tiles effectively kill standing waves and flutter echoes, and when used in conjunction with LENRD or Venus Bass Traps, or Sunburst Broadband Absorbers, can effectively tame the full acoustic bandwidth in virtually any environment.
Eliminates standing waves and flutter echoes
Reduces unwanted reflections
Decreases slap-back and room ring
Pyramid cut offers versatility during installation - many different shapes and sizes are possible and provides virtually seamless installation