We are offering QRD 2D Diffuser which is used to diffuse and scatter sound. The QRD 2D Diffuser, offered by us, induce phase shift between different frequency bands (depending upon its placement). Avail the QRD 2D Diffuser from us in bulk quantity at market leading prices.Specifications Design frequency : 500 hz True diffusion range : 500 hz - 3.5 khz Scattering : 250 hz - 500 hz Min. Distance from seating position : 6