18" High Power PA Woofer .Nominal Impedance 4 or 8 Ohm .Magnet Weight 125 OZ .Sensitivity (1W/1m): 97.5 dB SPL 18" High Power PA Woofer Detailed Specifications:1) Nominal Diameter: 460 (18) mm (in)2) Nominal Impedance: 4 or 8 Ohm3) Magnet Weight: 125 OZ4) RMS Power Rating: 1000 Watts5) Program Power: 2000 Watts6) Sensitivity (1W/1m): 97.5 dB SPL7) Frequency Range: 25Hz - 1kHz8) Voice Coil ...