Summary: Type: subwoofer; Size: 30 cm (12 in.); The number of bands: 1; Power: 180 W (nominal), 360 W (maximum); Frequency range: 25 - 800 Hz; Impedance: 4 Ohm; Built-in amplifier: yes; Housing: yes; Enclosure type: vented; Number of speakers: 1; Dimensions: 300 mm; ...