In 1990, RPG® patented DiffusorBlox®, a unique, cost effective acoustical block. It provides an attractive interior finish treatment, plus extended low frequency absorption and sound diffusion to minimize interfering reflections.
Now for the first time in the history of architectural acoustics, a new acoustical concrete masonry unit offers unprecedented economy by making it possible to incorporate complete acoustical performance into the structural walls of music, speech, athletic, and multipurpose facilities. DiffusorBlox® simultaneously offer a distinctive appearance, extended low frequency absorption, sound isolation, and sound diffusive reflection control.