Summary: Type: subwoofer; Size: 25 cm (10 in.); The number of bands: 1; Power: 400 W (nominal), 800 watts (maximum); Frequency range: 20 - 300Hz; Impedance: 2 Ohms; Housing: no; Recommended housing: closed box, vented; Number of speakers: 1; Dimensions: 250 mm; Material suspension: butyl rubber; Basket: stamped; Material basket: steel; Type of ...