Auralex Auralex Studiofoam Metro Panels - 2 ft. W x 4 ft. L x 2 in. H - Purple (12 Panels per Box)

Studiofoam Metro Panels spread sonic energy as well as each absorbing a slightly different slice of the frequency spectrum. It takes slightly different amounts of time for sound waves to travel through the different sections of the Metro, strike the mounting surface and travelling back through the Metro into the room, so wave fronts are in effect softened rather than just being absorbed. All this means, you will love the way it makes your room sound.High density, open-celled acoustical foamAbsorbs mid/high frequency reflections to control the ambience of any roomAlleviates flutter echo and slap backWill not deteriorate or crumble apart over timePartially formulated out of soy components to reduce petroleum based chemical usage in an effort to curb dependence on fossil fuels