Summary: Type: subwoofer; Size: 30 cm (12 in.); The number of bands: 1; Power: 250 W (nominal), 500 W (maximum); Sensitivity: 90 dB (W/m); Frequency range: 23 - 2600 Hz; Impedance: 4 Ohm; Housing: no; Recommended housing: vented; Number of speakers: 1; Dimensions: 300 mm; Material suspension: butyl rubber; Magnet weight: 2268 g; ...