Summary: Type: subwoofer; The number of bands: 1; Power: 250 W (nominal), 500 W (maximum); Sensitivity: 89 dB; Frequency range: 55 - 2500 Hz; Housing: no; Additional information: Cone material - plated polypropylene manufactured by the method of injection molding. Nominal impedance is 4 Ohms. Mounting diameter - 280 mm; ...