RCF LF18X401, Woofer 18", 1500 Watt RMS / 8 Ohm

Very linear frequency response characteristics, extreme high power handling while generating the lowest harmonic distortion of any comparable 18-inch transducer within its application range. The LF18X401 uses a fibre loaded cone assembly along with a high excursion triple roll surround. This combination provides remarkable strength and a peak to peak maximum excursion of 50 mm. The new dual forced hyper-venting system guarantee a very efficient voice coil ventilation for minimum power compression and incredible power handling.

Features: 4-inch, fiberglass inside/outside copper voice coil 3000W continuous program power handling 97.5 dB Sensitivity 25 Hz – 1 kHz Frequency range Dual Forced Hyperventing System Dual spider design with silicon based dampening control Triple-roll surround and corrugated straight cone geometry

General Specifications Nominal Diameter: 460 / 18 mm/inch Rated Impedance: 8 Ohm Program Power: 3000 W AES Power handling capacity: 1500 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 / 1.97 mm/inch Minimum Impedance: 6.5 Ohm Voice Coil Diameter: 100 / 4 mm/inch Voice Coil Material: Copper Voice Coil Winding Depth: 30 / 1.18 mm/inch Number of layers: 2 Kind of layer: inside / outside Top Plate Thickness: 15 / 0.6 mm/inch Cone Material: No pressed pulp Cone Design: Straight Surround Material: Polycotton Surround Design: Triple roll

Thiele/Small Parameters Resonance frequency: 30 Hz DC resistance: 5.4 Ohm Mechanical factor: 7.4 Electrical factor: 0.31 Total factor: 0.30 BL Factor: 26.5 T · m Effective Moving Mass: 215 g Equivalent Cas air load: 274 liters Effettive piston area: 0.122 m² Max. linear excursion (mathematical): 11.5 mm Voice - coil inductance @ 1kHz: 2,5 mH Half-space efficiency: 2.30%

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 / 0.25 mm/inch Front Mount Baffle Cut-out: 424 / 16.7 mm/inch Rear Mount Baffle Cut-out: 424 / 16.7 mm/inch Depth: 188 / 7.4 mm/inch Volume occupied by the driver: 6.5 / 0.23 liters/ft³ Net Weight: 13.3 / 29.3 kg/lbs