RCF LF18G401 The Lf18g401 Is A 18-inch Woofer W/linear Frequency Response Cheracteristics & Very High Power Handling.

This item is brand-new, factory sealed.

Uses a fibre loaded cone assembly along w/a high excursion triple roll, constant geometry surround. * The LF18G401 is ideal for use in applications where incredible power handling, long excursion & perfect control is required. * Ideal for high quality professional bass reflex & bass-horn system. * The robust machanical design & optimised weight of the device make it desiderable for use in fixed installation or portable professional loudspeaker system. * 4-inch, fiberglass inside/outside copper voice coil * 1800W continuous program power handling * 98 dB Sensitivity * 30 Hz – 1 kHz Frequency range * Dual spider design w/silicon based dampening control * Triple-roll surround & corrugated straight cone geometry General Specifications * Nominal Diameter: 460 / 18 mm/inch * Rated Impedance: 8 Ohms * Program Power: 1800 W AES * Power handling capacity: 900 W AES * Sensitivity: 98 dB * Frequency Range: 30 Hz to 1000 Hz * Effective Piston Diameter: 395 / 15.6 mm/inch * Max Excursion Before Damage (peak to peak): 50 / 2.0 mm/inch * Minimum Impedance: 5.9 Ohms * Voice Coil Diameter: 100 / 4 mm/inch * Voice Coil Material: Copper * Voice Coil Winding Depth: 23 / 0.9 mm/inch * Number of layers: 2 * Kind of layer: inside / outside * Top Plate Thickness: 12 / 0.5 mm/inch * Cone Material: No pressed pulp * Cone Design: Straight * Surround Material: Polycotton * Surround Design: Triple roll Thiele/Small Parameters * DC resistance: 4.8 Ohms * Mechanical factor: 7.6 * Electrical factor: 0.30 * Total factor: 0.29 * BL Factor: 24.6 T m * Effective Moving Mass: 182 g * Equivalent Cas air load: 268 liters * Effettive piston area: 0.122 m² * Max. linear excursion (mathematical): 8.5 mm * Voice - coil inductance at 1kHz: 2.4 mH * Half-space efficiency: 3.09% Mounting information * Overall Diameter: 465 / 18.3 mm/inch * Bolt Circle Diameter: 442-447 / 17.4-17.6 mm/inch * Bolt Hole Diameter: 6.5 / 0.3 mm/inch * Front Mount Baffle Cut-out: 424 / 16.7 mm/inch * Rear Mount Baffle Cut-out: 424 / 16.7 mm/inch * Depth: 205 / 8.1 mm/inch * Volume occupied by the driver: 7.0 / 0.25 liters/ft³ * Net Weight: 13 / 28.9 kg/lbs Shipping information * Shipping weight: 13.7 / 30.4 kg/lbs