Summary: Type: subwoofer; The number of bands: 1; Power: 400 W (nominal), 800 watts (maximum); Sensitivity: 91 dB; Frequency range: 46 - 150 Hz; Housing: no; Additional information: 2x4 Ohms impedance. Resonance frequency 46.54 Hz. The mass of the magnet 2.65 kg Cast aluminum basket. Suspension of nitrile rubber. Forced cooling system. Aluminum radia ...