Subwoofer nakamichi NS-W12D dual 4 ohm Specification : - N-Power : 120 W - Peak Power : 1200 W - Sensitivity : 90 dB (3 dB) - Impedance : 4 + 4 Ohm - Capasitance : 5,6 UF / 100 V - Freq. Response : 40 Hz - 1000 Hz - Voice Coil : ASV (Diameter 35,5) - Magnet Mass : 29,2 Oz (828 g)