1. Mid and high frequency active speaker. 2. Driver:MF1x12"+HF1X3" 3. Use for theater, night club, outdoor performance. ... speaker in MF band and HF band.2. Long distance transmitting speaker.3. The active speaker, inside enclosure with ... 12" horn load middle frequency speaker and a 3" compression high frequency driver, which install in H ... 520 Trapezoidal 10° /each side EK-120 2-way MF-HF active speaker