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Problem and Solution
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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.
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Performance
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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
rooms reverberation response. The Formedffusor can be used to offset the
usually
predominate high frequency absorption of people, drapery, rugs, and porous materials.
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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.
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Installation |
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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.
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FEATURES
- QRD® number theory sound diffusion
- Low frequency diaphragmatic absorption
- Custom colors and textures
- Can be oriented to provide one or two dimensional diffusion in the far field
- 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 Formedffusors light weight makes handling and installation simple
APPLICATIONS
- Music education facilites
- Recording studios
- Broadcast studios
- Rehearsal rooms
- Classrooms
- Auditoriums
- Worship spaces
- Cinemas
- Performing arts centers
SPECIFICATIONS
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