Summary: Type: subwoofer; Size: 20 cm (8 in.); The number of bands: 1; Power: 100 W (nominal), 800 watts (maximum); Frequency range: 30 - 250 Hz; Impedance: 4 Ohm; Built-in amplifier: yes; Case: yes; Case type: closed box; The number of speakers: 1; Dimensions: 200 mm; Cone material: polypropylene injection molded; Material suspension: rubber; ...