Check the listing for details. FlexiFuser Combination Diffuser. Condition: New. Listed at 685.99 USD. The Primacoustic FlexiFuser is an innovative acoustic device that combines diffusion with absorption to disperse high-frequency flutter echo and control primary reflections at the same time.Measuring 24" x 48" (60.96 cm x 121.92 cm), this full size device is equipped with six variable pitch slats that span the full top-to-bottom height. These are rotated at varying angles to disperse high frequencies to create the desired energy spread that best suits the room and seating position. Behind the slats is a high-density 2" (5.08 cm) thick acoustic panel. This effectively absorbs directional energy down to 250Hz while eliminating resonant build-up behind the slats.Made from hard, heavy wood composite for maximum reflection, the FlexiFuser ships flat to save freight.