RPG Diffusor Systems

1 Dimensional Installation

2 Dimensional Installation

Since it’s introduction in 1984, the number theoretic QRD® 734 Diffusor has proven to be a versatile general purpose diffusor. It’s uniform scattering, wide bandwidth, and broad selection of finishes make it a logical choice for almost any speech, critical listening, or performance facility. The Formedffusor™ brings this proven technology to a wider audience because of its low price, ease of installation, Class A fire rating, light weight, impact resistance, and color and texture options.

Problem
Furniture grade QRD® diffusors may be too heavy for some ceiling applications or too expensive for large scale coverage. There is a need for a lightweight, Class A, cost effective, plastic QRD®.

Solution
To address this problem, RPG® developed a lightweight, thermoformed panel made of Class A Kydex®. The diffusor has graceful curved inner and outer radii for an attractive appearance. Kydex® is stiff and impact resistant allowing the Formedffusor™ to be used in almost any wall or ceiling application.

Absorption

The Formedffusor™ is designed to offer wide angle, broad bandwidth sound diffusion as well as useful low frequency absorption. These features control excessive boominess and balance the room's reverberation response. The Formedffusor™ can be used to offset the usually predominate high frequency absorption of people, drapery, rugs, and porous materials.

Diffusion

The Formedffusor™ is based on the QRD® reflection phase grating introduced by RPG® in 1983. It offers broad bandwidth wide angle diffusion. The graph illustrates the average diffusion coefficient (1 is ideal) for all angles of incidence. Compared to a flat reflecting panel, the QRD® maintains uniform diffusivity as a function of frequency above the diffraction limit.

Installation
The Formedffusor™ can be wall mounted or suspended in a T-bar grid. Panels can be aligned to form a 1D diffusor array or staggered 90° for a 2D diffusor array.

Home: Products: Formedffusor™

The First Low Cost Thermoformed QRD® Diffusor From The Acoustical Industry’s Leading Innovator

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Applications

Music education facilites, Recording studios, Broadcast studios, Rehearsal rooms, Classrooms, Auditoriums, Worship spaces, Cinemas, Performing arts centers

Specifications

Acoustical Data
Absorption Coefficients
Diffusion Coefficients

Product Details
Option Sheet
CSI Specifications

Cutsheets
Standard Unit

Mounting Details
Wall Mount
T-Bar Tilt and Drop

Features & Benefits

Features
QRD® number theory sound diffusion

Lightweight thermoformed fabrication

Low frequency diaphragmatic absorption

Custom colors and textures

Can be oriented to provide one or two dimensional diffusion in the far field

Panels nest into one another

Benefits
Low frequency absorption can be used to control boominess in small rooms, while also providing uniform sound diffusion

Thermoformed panels are designed to nest for lower shipping costs

Diffusors can be aligned linearly for diffusion in the direction perpendicular to the well direction or rotated 90° forming an alternating pattern to provide omnidirectional scattering

2' x 2' size offers more flexibility and higher diffusion performance than larger periodic 4' x 4' formats with a smaller repeat unit

The Formedffusor™’s light weight makes handling and installation simple

651-C Commerce Drive, Upper Marlboro, MD, 20774, Phone: 301-249-0044, Fax: 301-249-3912, E-mail: info@rpginc.com