Vicoustic MULTIFUSER DC4 Acoustic Diffuser Panel (Black) - 4 UnitsSound diffuser for walls and ceilings Multifuser DC4 is a bi dimensional diffusion panel that provides multi reflection on both vertical and horizontal planes in sound critical spaces. It performs on mid and high frequencies, brightening and clarifying sound. Made from high quality EPS (Expanded Polystyrene), Multifuser DC4 is notable for its effective performance in solving problems like lack of speech intelligibility or music definition and its