Summary: Type: coaxial speaker; The number of bands: 3; Power: 180 watts (maximum); Sensitivity: 91 dB; Frequency range: 30 - to 30,000 Hz; Additional information: Rated power: 120 W. Impedance: 4 Ohms. Crossover frequency 1000/5700 Hz. Diameter mounting hole 218x148 mm neodymium Magnet. WOOFER material - polypropylene.; ...