QRD

QRD^® 734 has proven to be the most popular and versatile diffusor in the RPG product line. Its wide bandwidth, low cost and a broad selection of finishes make it a logical choice for music education facilities, recording studios, worship spaces, auditoriums, theaters and performing arts facilities. This 1-dimensional diffusor is a modular, computer-designed phase grating that produces a directional hemidisc polar response that can be oriented in any direction. The surface of the QRD^® 734 is designed to provide a more uniform sound field through mid and high-frequency diffusion. In contrast, 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.

QRD^® 734F is a one-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 limits the amount of sound energy removed by absorption while the diffusion performance extends over 4 octaves.