Summary: Type: subwoofer; The number of bands: 1; Sensitivity: 84 dB (W/m); Frequency range: 50 to 300 Hz; Impedance: 4 Ohm; Housing: no; Recommended housing: closed box, vented, with a passive heatsink Band (Band-pass); Number of speakers: 1; Dimensions: 260x90 mm; Resonance frequency (Fs): 64 Hz; Full q (Qts): 0.89; Equivalent volume (Vas): 8 ...