4" Acoustic sound panels are most effective at treating low range to high frequency sound. In plain English: Everything from a low guitar string to a voice echoing in a gymnasium.  

4" Acoustic Bass Traps
Sale
$ 99.99 As low as $ 59.99
Acoustical Bass Trap Panels are a perfect solution to any unwanted noise problems in a home, business, studio, home theater, gymnasium or house of worship. Choose your custom size and color to fit your environment.  High quality acoustically...
$ 199.99 As low as $ 99.99
Sound Better AND Look Better with our Decorative Wall Panels - Acoustic Image Panels  Any custom hi-resolution image, printed on Mixmastered Acoustics sound panels! Our custom acoustic panels are printed directly on acoustically...