DS18 PRO-DRNSC 1" Twist On Throat Neodymium Driver 1" Composite Polyimide VC 240 Watts 110dB 4 Ohm Peak power handling - PRO-DRNSC neodymium compression (horn) driver boasts out-of-this-world power handling for a Pro audio sound you will love. 120 Watts RMS - 240 Watts Max Sensitivity - PRO-DRNSC neodymium compression driver offers State of the art performance that provides powerful sound with clarity and depth. Frequency response 1.5Hz - 20KHz with build in capacitor Nominal impedance 4 ohms -