Acoustic Diffuser – QD-11


The QD-11 is a wooden quadratic diffuser based upon prime number 11 with a diffusion frequency response from 375 Hz. – 3,400 Hz.

You get:

  • A solid wood unit that 23 1/4″W x 48″H x 9 1/2″D and weighs 65 lbs.
  • Frequency Response: 375 Hz. – 3,400 Hz.
  • Independently tested and predictable performance results,
  • Phone time with our Chief Acoustic Engineer so any questions can be quickly answered,
  • Both horizontal and vertical diffusion options,
  • Expert placement advice so you can get the most out of your QD unit,
  • A 100% money back guarantee!

Request Quote

These units have special handling and shipping requirements, due to their weight and size. Please call us on 520-392-9486 or click HERE to contact us so we can assist you further.

Additional information

Weight 20 lbs
Dimensions 48 × 14.25 × 4.5 in


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