Summary: Type: subwoofer; Size: 30 cm (12 in.); The number of bands: 1; Power: 375 watts (nominal); Sensitivity: 89 dB; Frequency range: 20 to 350 Hz; Impedance: 4 Ohm; Housing: no; Recommended housing: closed box, vented, with a passive heatsink Free-Air; Number of speakers: 1; Dimensions: 305 mm; Cone material: copolymer; Material suspension: ...