Summary: Type: subwoofer; Size: 25 cm (10 in.); The number of bands: 1; Power: 250 W (nominal), 500 W (maximum); Sensitivity: 87 dB; Impedance: 4 Ohm; Housing: no; Recommended housing: vented, Band (Band-pass); Number of speakers: 1; Dimensions: 250 mm; Mounting depth: 124 mm; The installation hole: 232 mm; Material basket: steel; Resonance fre ...