Summary: Type: subwoofer; Size: 25 cm (10 in.); The number of bands: 1; Power: 200 W (nominal), 500 W (maximum); Sensitivity: 87 dB (W/m); Frequency range: 25 - 2500 Hz; Impedance: 4 Ohm; Housing: no; Recommended housing: closed box; Number of speakers: 1; Dimensions: 250 mm; Cone material: aluminium; Mounting depth: 140 mm; The installation ho ...