RPG Abfusor - Absorption Phase Grating

An absorption phase grating. The depths of both the reflective wells of the RPG and the absorptive wells of the product are based on mathematical number theory sequences.

The absorption efficiency extends below that of a traditional flat porous absorber by using two absorption mechanisms. The first is the traditional dissipation of sound energy into heat by frictional losses in the pores of a porous absorber.

The second is the viscous losses due to high particle velocity flows across the well dividers induced by the pressure differences in adjacent wells. This pressure gradient mechanism results in additional low-frequency absorption. The absorption phase grating topology also offers efficient glancing angle reflection control and near field diffusion to create a natural-sounding, attractive room treatment.

The product can be mounted on a wall, in a T-bar ceiling grid, or left free-standing. Type E flush mounting provides improved absorption. Hardwood feet are available for free-standing installation.

Features and benefits:

• Similar appearance to a QRD 734 diffusor.
• Complimentary performance to a QRD 734 diffusor.
• Frictional dissipation and pressure gradient absorption mechanisms.
• Number theory surface topology.
• Modular and versatile.
• Attractive design element.