Summary: Type: subwoofer; Size: 30 cm (12 in.); The number of bands: 1; Power: 600 W (nominal), 1200 watts (maximum); Sensitivity: 85 dB; Impedance: 2 Ohms; Housing: no; Material suspension: rubber; Basket: cast; Material basket: aluminium; Resonance frequency (Fs): 37 Hz; Full q (Qts): 0.4; Equivalent volume (Vas): 21 l; Type of winding: doub ...