QRD ® 734F
PRODUCT OVERVIEW QRD ® 734F is a 1-dimensional sound diffuser developed to expand the product line anchored originally by the classic QRD ® 734 Panel. It is the first product of its kind offered on the market. With a patented folded well design, the QRD ® 734F extends the diffusion bandwidth into the lower mid-range frequencies in only 4-1/4" depth, whereas other diffuser designs require at least 8". The natural wood construction of the unit, available in a high recycled content, ULEF, Class A fire-rated and FSC MDF core, limits the amount of sound energy removed by absorption. At the same time, the diffusion performance extends over 4 octaves. SIZING • Standard Panels: 19-5/8" W x 23-5/8" or 47-1/4" L x 4-1/4" D (Custom panel lengths up to 8' are available) • Each panel weighs approx. 4.00 lbs/ft 2
Blue = Diffusion Coefficient Green = Scattering Coefficient Red = Absorption Coefficient - NRC = 0.35, SAA = 0.32
CORE FIRE RATING Class A (per ASTM E-84) FINISH
Additional test data is available – please see the Supplementary Acoustical Data Charts online or contact your local RPG Sales Representative.
Diffusion Coefficient
QRD ® 734F is available in natural and engineered wood veneers and laminates with clear lacquer or factory color-matching of wood finishes and paint colors. Standard species include Alder, Anigre, Ash, Birch, Cherry, Mahogany, Maple, Poplar, Red Oak, Walnut and White Oak. Custom species may be available on request. INSTALLATION QRD ® 734F is designed to be surface or flush-mounted to a wall or ceiling with factory-integrated blocking. They can be installed singularly or in an array across walls and ceilings.
Frequency (Hz)
250 315 400 500 630 800
0.00 0.07 0.30 0.23 0.35 0.20 0.37 0.30 0.34 0.50 0.48 0.55 0.42
1000 1250 1600 2000 2500 3150 4000
RPG Acoustical Systems, LLC. | 99 South St | Passaic, NJ 07055 rpgacoustic.com | info@rpgacoustic.com | 973-916-1166
QRD ® 734F 10/2023
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