B&C; 21SW152 Neu Reconed, 21" Bass Speaker@+*New reconed*, Magnet type: Neodymium, Impedance: 8 ohms, Power rating: 2000 W AES, 4000 W peak, Sensitivity: 96 dB 96 dB 1 W / 1 m, Frequency range: 30 Hz - 1,000 Hz, Weight: 18.5 kg