Summary: Type: subwoofer; Size: 30 cm (12 in.); The number of bands: 1; Power: 400 W (nominal), 700 watts (maximum); Sensitivity: 86 dB (W/m); Frequency range: 3 - 300 Hz; Impedance: 2 Ohms; Housing: no; Number of speakers: 1; Dimensions: 318 mm; Mounting depth: 90 mm; The installation hole: 287 mm; Type of winding: double; ...