Interfering reflections from a critical listening room’s boundary surfaces corrupt the timbre and stereo imaging. Therefore, signal processing and image placement will not transfer accurately to other listening environments. The most effective way to minimise this form of acoustic distortion is to absorb the interfering reflections over a broad range of frequencies. To extend the low frequency absorption efficiency of conventional flat absorptive panels, RPG research developed the Abflector. The Abflector is a novel and economical internally hinged, upholstered absorptive panel. It ships flat, but mounts with most of the absorptive material away from the boundary surface for improved low frequency absorption.