Prime7™ Quadratic Residue Diffuser

Overview

Prime7™ is a computer-optimized 1-D diffuser design utilizing quadratic residue diffuser number theory and periodic reflection phase grate principles in a highly finished acoustical product that can be mounted to most architectural surfaces. These products are precisely engineered and manufactured to provide one-dimensional broadband diffusion and wide-range scattering of acoustical sound energy without resonance, high-Q reflections, or unwanted absorption. Prime7™ are meticulously constructed to dampen unwanted resonances and resist impact and damage.  It comes standard with a matte white painted finish, which provides excellent light reflectivity.  Custom color options and optional fabric facings are also available. 

applications

Prime7™ is ideal for rooms and spaces that require diffusion to help scatter and blend the sounds in a room for the listening enjoyment of both music and speech. Some applications include:

  • Auditoriums
  • Performing Arts Centers
  • Lecture Halls
  • Convention Centers
  • Churches
  • Music Spaces
  • Recording Studios

  • Thickness (Nominal): 4″
  • Sizes (Nominal): 2’x2′, 2’x4′, 4’x4′
  • Edge Profile: Square or Tegular
  • Finish: Matte White Painted Finish
    • Optional Colors and Fabric Facings Available
  • Installation Methods: Tilt & Place in Standard T-Bar Grid Systems, Cleat Mount for Wall Installations
  • Weight:  1.1 Lbs/ Square Foot (Same As Commercial Ceiling Tile)
  • Fire Performance: Class A

  • Quadratic Residue Prime7™ Periodic Reflection Phase Grate Diffuser
  • One-Dimensional Diffusion with Wide-Range Scattering
  • Two-Dimensional Diffusion & Sound Scattering Can Be Achieved by Grouping Installed Products in an Altering Pattern Array
  • Sequence Same for All Diffuser Sizes
  • Designed for Ceiling & Wall Installations
  • Matte White Painted Finish Provides Excellent Light Reflectivity
  • Custom Color Finishes Available
  • Prime7™ Ceiling Diffuser’s Precise Tolerances & Mono-Block Construction Insures No Resonances, Rattles or Sympathetic Vibration Will Be Caused or Heard, and High STC Ratings are Achieved
  • Optional Decorative Fabric Facings from Guilford of Maine or Designer Selections from Maharam, Carnegie, DesignTex, Knoll, & More!

Acoustical Data

Acoustical Performance - Absorption Coefficients

Frequency (Hz) 125 250 500 1K 2K 4K NRC
Absorption Coefficients Type E-400 Mounting
0.48
0.40
0.38
0.33
0.19
0.19
0.30

Acoustical DPerformance - Sound diffusion & Scattering

Frequency (Hz) 125 250 500 1K 2K 4K 8K
Diffusion Coefficients
0.04
0.10
0.60
0.58
0.46
0.47
0.27
Scattering Coefficients
0.01
0.03
0.33
0.75
0.90
0.88
0.77

Finishes

Available in Matte White Painted Finish with optional colors and fabric facings.