Specifications Nominal diameter 380 mm (15.0 in) Nominal impedance 8 Ω Minimum impedance 6.6 Ω Nominal power handling 800 W Continuous power handling 1600 W Sensitivity (1W/1m) 98.0 dB Frequency range 45 — 2000 Hz Voice coil diameter 100 mm (4.0 in) Winding material Aluminium Former material Glass Fibre Winding depth 23 mm (0.9 in) Magnetic gap depth 11 mm (0.43 in) Flux density 1.2 T Design Surround shape Triple Roll Cone shape Exponential Magnet material Neodymium Inside Slug Spider Double Silicone Pole design T-Pole Woofer cone treatment WP Waterproof Front Side Recommended enclosure 80.0 dm3 (2.82 ft3) Recommended tuning 50 Hz Parameters Fs 47 Hz Re 5.1 Ω Qes 0.29 Qms 6.1 Qts 0.28 Vas 88.0 dm3 (3.1 ft3) Sd 855.0 cm2 (132.5 in2) η₀ 2.9 % Xmax 10.0 mm Xvar 9.0 mm Mms 136 g Bl 26.3 Txm Le 1.2 mH EBP 162 Hz Mounting And Shipping Info Overall diameter 393 mm (15.5 in) Bolt circle diameter 374 mm (14.7 in) Baffle cutout diameter 354.0 mm (13.9 in) Depth 180 mm (7.09 in) Flange and gasket thickness 16 mm (0.62 in) Air volume occupied by driver 6.0 dm3 (0.21 ft3) Net weight 9.3 kg (20.5 lb) Shipping units 1 Shipping weight 10.8 kg (23.2 lb) Shipping box 500x500x250 mm (19.7×19.7×9.8 in)