Specifications Nominal diameter 380 mm (15.0 in) Nominal impedance 8 Ω Minimum impedance 6.4 Ω Nominal power handling 1000 W Continuous power handling 2000 W Sensitivity (1W/1m) 95.0 dB Frequency range 40 — 3000 Hz Voice coil diameter 100 mm (4.0 in) Winding material Copper Former Material Glass Fibre Winding Depth 25.0 mm (1.0 in) Magnetic Gap Depth 11.0 mm (0.43 in) Flux Density 1.1 T Design Surround Shape Triple Roll Cone Shape Curvilinear Magnet Material Ferrite Spider Double Silicone Pole Design T-Pole Recommended Enclosure 85.0 dm3 (3.0 ft3) Recommended Tuning 45 Hz Woofer Cone Treatment TWP Waterproof Both Sides Parameters Resonance Frequency 44 Hz Re 5.3 Ω Qes 0.4 Qms 5.65 Qts 0.38 Vas 100.0 dm3 (3.53 ft3) Sd 908.0 cm2 (140.74 in2) η₀ 2.0 % Xmax 9.0 mm Xvar 10.0 mm Mms 154.0 g Bl 24.0 Txm Le 1.2 mH EBP 110 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 173 mm (6.81 in) Flange and gasket thickness 16 mm (0.63 in) Air volume occupied by driver 5.0 dm3 (0.18 ft3) Net weight 11.7 kg (25.79 lb)