Summary: Type: subwoofer; Size: 30 cm (12 in.); The number of bands: 1; Power: 250 W (nominal), 500 W (maximum); Sensitivity: 90 dB; Housing: no; Number of speakers: 1; Dimensions: 300 mm; Resonance frequency (Fs): 27 Hz; Full q (Qts): 0.43; Equivalent volume (Vas): 88 l; ...