Specifications Nominal diameter 380 mm (15.0 in) Nominal impedance 8 Ω Minimum impedance 6.0 Ω Nominal power handling 700 W Continuous power handling 1400 W Sensitivity (1W/1m) 99.0 dB Frequency range 45 — 3000 Hz Voice coil diameter 88 mm (3.5 in) Winding material Aluminium Former material Glass Fibre Winding depth 21 mm (0.85 in) Magnetic gap depth 10 mm (0.39 in) Flux density 1.15 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 125.0 dm3 (4.41 ft3) Recommended tuning 45 Hz Parameters Fs 45 Hz Re 5.0 Ω Qes 0.36 Qms 6.1 Qts 0.34 Vas 126.0 dm3 (4.45 ft3) Sd 855.0 cm2 (132.53 in2) η₀ 3.1 % Xmax 8.0 mm Xvar 10.0 mm Mms 102 g Bl 20.1 Txm Le 1.25 mH EBP 125 Hz Mounting And Shipping Info Overall diameter 393 mm (15.47 in) Bolt circle diameter 374 mm (14.72 in) Baffle cutout diameter 354.0 mm (13.94 in) Depth 177 mm (6.97 in) Flange and gasket thickness 13 mm (0.51 in) Air volume occupied by driver 3.5 dm3 (0.12 ft3) Net weight 4.6 kg (10.14 lb) Shipping units 1 Shipping weight 5.9 kg (13.01 lb) Shipping box 420x420x200 mm (16.54×16.54×7.87 in)