The FAITAL PRO 15HP1020-8 is a 15-inch high-power woofer designed for 8-Ohms professional audio applications 700 Watts Rms 1400 Watts Max. This woofer is known for its high efficiency, strong bass performance, and wide frequency range, making it suitable for various professional audio setups || NOMINAL SPECIFICATIONS || Nominal Diameter : 380 mm (15 in) || Overall Diameter : 393 mm (15.47 in) || Bolt Circle Diameter : 374 mm (14.72 in) || Baffle Cutout Diameter : 356 mm (14.02 in) || Depth : 181.3 mm (7.14 in) || Flange and Gasket Thickness : 13.7 mm (0.54 in) || Net Weight : 6.2 kg (13.6 lb) || Shipping Box (Single Carton Box) : 430 x 427 x 236 mm (16.9 x 16.8 x 9.3 in) || Shipping Weight : 7.2 kg (15.9 lb) || || TECHNICAL PARAMETERS || Nominal Impedance : 8 Ohm || Minimum Impedance : 6.9 Ohm || AES Power Handling (1) : 700 W || Maximum Power Handling (2) : 1400 W || Sensitivity (1W/1m) : 98 dB || Frequency Range : 40÷4000 Hz || Voice Coil Diameter : 100 mm (4 in) || Winding Material : Al || Former Material : Glass Fiber || || TECHNICAL PARAMETERS || Winding Depth : 22 mm (0.87 in) || Magnetic Gap Depth : 12 mm (0.47 in) || Flux Density : 1.3 T || Magnet : Neodymium Slug || Basket Material : Aluminum || Demodulation : No || Cone Surround (3) : Triple Roll || NET Air Volume filled by Loudspeaker : 3.9 dm^3 (0.138 ft^3) || Spider Profile : 2x non-adjacent symmetrical constant height waves || || THIELE AND SMALL PARAMETERS || Fs : 40 Hz || Re : 5.5 Ohm || Qes : 0.28 || Qms : 10.2 || Qts : 0.27 || Vas : 126.6 dm^3 (4.47 ft^3) || Sd : 822 cm^2 (127.41 in^2) || Xmax (4) : 9.00 mm || Xdamage (5) : 16 mm || Mms : 118.0 g || Bl : 24.2 N/A || Le : 1.2 mH || Mmd : 91.4 g || Cms : 0.13 mm/N || Rms : 2.9 kg/s || Eta Zero : 2.82 % || EBP : 143 Hz || || Brand : FAITAL PRO || Model Number : 15HP1020-8 | 15HP1020 || UPC : 810130951222 || PART NUMBER (P/N) Push Terminals - 8 Ohm Version : 3803941 || NOTES || PATENTED IT 2006/000327 || (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