Summary: Type: subwoofer; Size: 30 cm (12 in.); The number of bands: 1; Power: 300 W (nominal), 600 watts (maximum); Frequency range: 20 - 300Hz; Impedance: 4 Ohm; Housing: no; Recommended housing: closed box; Number of speakers: 1; Dimensions: 300 mm; Mounting depth: 102 mm; Material basket: steel; Type of winding: double; ...