Feature●Throat Diameter:1" / 25mm / Voice Coil Diameter 1.75" / 44.4mm●Impedance:8 ohms / D.C. Resistance 4.3 ohms.●AES Power Rating :70 Watts above 1.2kHz Program Power :140 Watts above 1.2kHz●Frequency Response:700Hz - 19kHz Recommended Crossover:1.2 kHz or higher●Diaphragm:PM4 Polymer / Voice Coil:Edgewound Aluminum Ribbon.Description THIS DRIVER EXCELS IN THE MIDRANGE SOUND YET HAS NICE HIGHS FEATURES AN EXCLUSIVE PM-4 POLYMER DIAPHRAGM THAT REDUCES DISTORTION & INCREASES THE CLARITY IN THE MIDRANGE. FOR ALL HIGH POWER HIGH FREQUENCY APPLICATIONS INCLUDING P.A. SYSTEMS, SOUND REINFORCEMENT, ETC.