Summary: Type: subwoofer; Size: 25 cm (10 in.); The number of bands: 1; Power: 200 W (nominal), 400 watts (maximum); Sensitivity: 91 dB (W/m); Frequency range: 20 - 1000 Hz; Impedance: 4 Ohm; Housing: no; Recommended housing: vented, Band (Band-pass); Number of speakers: 1; Dimensions: 250 mm; Cone material: polypropylene; Resonance frequency (F ...