Summary: Type: subwoofer; Size: 25 cm (10 in.); The number of bands: 1; Power: 500 W (nominal); Sensitivity: 85 dB (W/m); Impedance: 8 Ohms; Housing: no; Recommended housing: closed box, vented; Number of speakers: 1; Dimensions: 250 mm; Cone material: polypropylene metal evaporated; Resonance frequency (Fs): 33 Hz; Full q (Qts): 0.49; Equivale ...