Summary: Type: subwoofer; The number of bands: 1; Power: 1000 watts (maximum); Sensitivity: 97 dB; Frequency range: 5 - 1000 Hz; Housing: no; Additional information: Passive subwoofer with cast aluminium diffuser-holder and polypropylene cone. Impedance 4 Ohm. The main resonant frequency: 17 Hz. Equivalent volume (VAS): 312.9 HP Full q (QTS): 0.4. ...