QR-FE™ Quadratic Residue Diffuser
AVL Systems QR-FE™ Quadratic Residue Diffuser is a lightweight acoustical control device for mounting on wall surfaces. QR-FE™ Diffusers are designed to achieve optimal performance incorporating quadratic residue number sequences and computer modeling analysis combined with laboratory and application testing. AVL Systems QR-FE™ Quadratic Residue Diffusers are manufactured to provide diffusion for the enhancement of speech and the natural ambience desired of a room. These features increase speech intelligibility and listener comfort while reducing unwanted fatigue. |
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Effective Control of Flutter Echo
Quadratic Residue Number Theory Design
Maintains Room Ambience
Increased Speech Intelligibility
Class A Fire Rating
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AVL Systems QR-FE™ Diffusers are constructed of multi-density, thermo-molded polymers and are available in white, optional colors or fabric faced in a wide selection of standard or custom fabrics. Diffusers are supplied to finish sizes as specified and ready to install on wall surfaces. AVL Systems QR-FE™ Diffusers are ecologically friendly, containing up to 85% recycled materials.
Applications
Board Rooms, Lecture and Classrooms, Conference, Teleconference, and Videoconference Rooms, Courtrooms, Theatres, Concert Halls, Performing Arts Centers, Banquet Rooms, Rehearsal Facilities, Auditoriums, and many other architectural spaces where proper sound control is a consideration. QR-FE™ Diffusers help listeners and participants hear themselves with others, improves speech intelligibility, and increases clarity and tonal separation without significantly reducing reverberation.
Interactive Performance
The AVL Systems families of interactive performance products are designed to provide the acoustical engineer and specifier with a complete toolbox of technically compatible performance products for any application. These engineered products can be used together as an interactive system, working together to optimally enhance the acoustics of any architectural space. AVL Systems offers a full range of acoustic products for virtually every application and technical requirement.
Fire Performance
Composite assemblies with standard finish will have a flame-spread rating of less than 25 (Class A) per ASTM E-84.
Finishes
White textured finish standard. Options include a wide selection of colors and AVL Systems’ standard fabrics, Designers selection, and C.O.M.
Acoustical Performance (Absorption Coefficients)
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125Hz
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250Hz
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500Hz
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1KHz
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2KHz
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4KHz
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| QR-FE™ Diffuser |
.21
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.22
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.32
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.29
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.20
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.21
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