Summary: Type: subwoofer; The number of bands: 1; Power: 170 watts (maximum); Sensitivity: 91 dB; Frequency range: 35 - 3000 Hz; Housing: no; Additional information: Impedance 4 Ohm. Holder of the diffuser is made of aluminium. Magnet WOOFER: ferrite/neodymium. Suspension of NP from rubber. Fs: 43 Hz. Full quality Qts: 0.40. Equivalent volume of V ...