Tested and found totally in accordance with national environmental protection and firefighting codes
Raw wood colour NC paint
The product has good sound diffusion effect and greatly improves the reverberation time. The acoustic characteristics have reached the national standard for materials of the same kind, effectively improving the fullness, articulation and stereoscopic impression of the environmental sound.
Wall mounted at high-grade places e.g. music halls, home theatres, HIFI listening rooms and recording rooms, and places requiring improvement of sound quality and articulation.
The QRD diffusers are made of a series of parallel caissons with column variation depth. When the incident sound wave is 135°onto the horizontal QRD, it can reflect the sound out with an equal intensity within the range of 30°-150°.