Summary: Type: subwoofer; Size: 30 cm (12 in.); The number of bands: 1; Power: 350 W (nominal), 700 watts (maximum); Sensitivity: 90 dB (W/m); Frequency range: 20 Hz to 500 Hz; Impedance: 4 Ohm; Built-in amplifier: no; Housing: yes; Enclosure type: vented; Number of speakers: 1; Dimensions: 300 mm; ...