SUBWOOFER: 15" DUAL VOICE COILCONE: GLASS FIBER WOVENVOICE COIL(BSV): 4-LAYERS, 3"MAGNET: 65 OZ x 3RMS POWER: 1800WMAX POWER: 3500WFREQ.RESP.: 30HZ-500HZSPL: 92dB/W/MIMPEDANCE: 1 OHM+1 OHM