Frequency Response (-10 dB): 47 Hz - 16 kHz Frequency Response (±3 dB): 60Hz - 15 kHz Power Rating1: Maximum Input Voltage: Sensitivity2: Nominal Coverage Angle: Directivity (Q): 240 W Continuous Program (2 hrs) 120W (480W peak), Continuous Pink Noise (2 hrs) 100W (400W peak) Continuous Pink Noise (100 hrs) 28.0 V 87 dB, 1W @ 1m (ave. 80Hz - 16kHz) 360° horizontal, 160° vertical (primary listening 10° to 50° up from ground). 2.1 Directivity Index (DI): 3.