The FAITAL PRO 18XL2000-8 is a 18-inch high-power, low-frequency loudspeaker with robust features designed for professional audio applications 8-Ohms 2000-Watt Rms 4000-Watt Max. This subwoofer is known for its exceptional power handling and efficiency, delivering deep and defined bass suitable for high-demand audio systems. || NOMINAL SPECIFICATIONS || Nominal Diameter : 460 mm (18 in) || Overall Diameter : 460 mm (18.11 in) || Bolt Circle Diameter : 440 mm (17.32 in) || Baffle Cutout Diameter : 422 mm (16.61 in) || Depth : 227 mm (8.94 in) || Flange and Gasket Thickness : 14 mm (0.55 in) || Net Weight : 11.3 kg (24.9 lb) || Shipping Box (Single Carton Box) : 490 x 485 x 275 mm (19.3 x 19.1 x 10.8 in) || Shipping Weight : 12.8 kg (28.2 lb) || || TECHNICAL PARAMETERS || Nominal Impedance : 8 Ohm || Minimum Impedance : 7 Ohm || AES Power Handling (1) : 2000 W || Maximum Power Handling (2) : 4000 W || Sensitivity (1W/1m) : 97 dB || Frequency Range : 30÷1600 Hz || Voice Coil Diameter : 118 mm (4.65 in) || Winding Material : Cu || Former Material : Glass Fiber || || TECHNICAL PARAMETERS || Winding Depth : 37.3 mm (1.47 in) || Magnetic Gap Depth : 14 mm (0.55 in) || Flux Density : 1.2 T || Magnet : Neodymium Ring || Basket Material : Aluminum || Demodulation : Double Al Dem. Ring || Cone Surround (3) : Triple Roll || NET Air Volume filled by Loudspeaker : 7.3 dm^3 (0.258 ft^3) || Spider Profile : 2x non-adjacent symmetrical constant height waves || || THIELE AND SMALL PARAMETERS || Fs : 28 Hz || Re : 5.3 Ohm || Qes : 0.28 || Qms : 10.1 || Qts : 0.27 || Vas : 232.1 dm^3 (8.20 ft^3) || Sd : 1213 cm^2 (188.02 in^2) || Xmax (4) : 16.32 mm || Xdamage (5) : 33 mm || Mms : 286.0 g || Bl : 30.8 N/A || Le : 1.45 mH || Mmd : 238.3 g || Cms : 0.11 mm/N || Rms : 5.0 kg/s || Eta Zero : 1.8 % || EBP : 100 Hz || || Brand : FAITAL PRO || Model Number : 18XL2000-8 | 18XL2000 || UPC : 810130951284 || PART NUMBER (P/N) Push Terminals - 8 Ohm Version : 4604293 || NOTES || (1) 2 Hours Test According to AES 2-1984 Rev. 2003 || (2) Maximum power is defined as 3dB greater than nominal power || (3) Treated Polycotton || (4) Xmax= [(winding depth - magnetic gap depth)/2] + (magnetic gap depth/3) || (5) Maximum excursion before permanent damage