Artnovion Belem Absorber - 6 Stck. Artnovion BELEM Absorber A classical design for acoustical performance. BELEM, has an absorption treatment range between 350 HZ and 8000 Hz. It was conceived to eliminate sound reflections and to improve speech intelligibility by reducing standing waves and preventing from filtering in professional audio studios/rooms. This highly efficient absorber comes with a classical 4 squares design that creates a brick effect. Each acoustic panel with its premium fabric finish is available in 7 different colours. × Artnovion Belem Absorber - 6 Stck.