Vicoustic's Poly Fuser QR is a one of a kind 2D diffuser. The design combines a quadratic residue sequence with a curved surface to provide a two-dimensional diffusion pattern. In one dimension, Vicoustic uses an optimal curve to create an elliptical deflector that effectively scatters sound. In the other, a quadratic residue sequence is used to create effective diffusion from 400 Hz to 5 kHz. The Vicoustic Poly Fuser QR is different from traditional QRD diffusers in that it does not use "fins". This gives it a distinctive, elegant look.
Diffusion can be used as an alternative to absorption to solve acoustical problems such as comb filtering and slap echo. The main benefit of diffusion over absorption is that it adds a sense of spaciousness to your music, letting you treat your reflection points without over-deadening your room. Vicoustic's Poly Fuser QR is designed for studio tracking rooms, Hi-Fi listening rooms, home theaters, music venues, performance and rehearsal spaces, or any space that would benefit from diffusion.