SPMB 10 is a bidirectional sound projector made of durable aluminum body, 10 W power output, with ultra-compact mounting bracket. It is suitable for installation in public and industrial areas. With high-quality sound reproduction within frequency response of 180 Hz – 18 kHz with built-in 100V transformer with power taps. SPMB 10 is ideal for background music and voice announcements. It comes with two built-in 5" (127 mm) full-range speakers.