Pyramid Negative Diffusor; sound diffusor; effectively breaks upstanding waves and directional reflections to provide a sense of air and increased space in any room; ideally suited for recording studios, theatre's and critical listening environments; effective operating
Frequency range from 2000 - 4000 Hz;
Material: lacquered Birch Playwood;
Incl. 4 Mounting Clips for Wall fitting (Screws not included);