woofer 18 inch,400watt

18 inch woofer  400watt

Features4-inch, fiberglass inside/outside copper voice coil 2000W continuous program power handling 97.5 dB Sensitivity 25 Hz – 1 kHz Frequency range Progressive, spaced, aluminum demodulation rings Forced air ventilation and 14 mm top plate for minimum power compression Dual spider design with silicon based dampening control Triple roll surround and corrugated straight cone geometryGeneral SpecificationsNominal Diameter: 460 / 18 mm/inch Rated Impedance: 8 Ω Program Power: 2000 W AES Power handling capacity: 1000 W AES Sensitivity: 97.5 dB Frequency Range: 25 Hz ÷ 1000 Hz Effective Piston Diameter: 395 / 15.6 mm/inch Max Excursion Before Damage (peak to peak): 50 / 2.0 mm/inch Minimum Impedance: 6.0 Ω Voice Coil Diameter: 100 / 4 mm/inch Voice Coil Material: Copper Voice Coil Winding Depth: 25 / 1.0 mm/inch Number of layers: 2 Kind of layer: inside / outside Top Plate Thickness: 14/0.55 mm/inch Cone Material: No pressed pulp Cone Design: Straight Surround Material: Polycotton Surround Design: Triple roll Thiele/Small ParametersResonance frequency: 28 Hz DC resistance: 5.1Ω Mechanical factor: 6.5 Electrical factor: 0.29 Total factor: 0.27 BL Factor: 25 T · m Effective Moving Mass: 192 g Equivalent Cas air load: 340 liters Effettive piston area: 0.122 m² Max. linear excursion (mathematical): 9.0 mm Voice - coil inductance @ 1kHz: 2.3 mH Half-space efficiency: 2.64% Mounting informationOverall Diameter: 465 / 18.3 mm/inch Bolt Circle Diameter: 442-447 / 17.4-17.6 mm/inch Bolt Hole Diameter: 6.5 / 0.25 mm/inch Front Mount Baffle Cut-out: 424 / 16.7 mm/inch Rear Mount Baffle Cut-out: 424 / 16.7 mm/inch Depth: 210/8.3 mm/inch Volume occupied by the driver: 7.0/0.25 liters/ft³ Net Weight: 13.3 / 29.3 kg/lbs Shipping informationShipping weight: 14.3 / 31.5 kg/lbs

18 inch woofer 400watt