RCF LF18N401 Woofer

Incredibly linear frequency response characteristics,the highest power handling of any comparable 18-inch neodymium transducer, the lowest power compression. The LF18N401 uses a fibre loaded cone assembly along with a high excursion triple roll,constant geometry surround. This combination provides remarkablestrength venting system guarantee a very efficient voice coil ventilation for minimum power compression and higher power handling. Features4 - inch, fiberglass inside-outside copper voice coil2400 Watt continuous program power handling98 dB Sensitivity30 Hz - 1 kHz Frequency rangeDual-forced air ventilation and 15mm top plate for minimum power compressionDual spider design with silicon based dampening controlTriple-roll surround and corrugated straight cone geometrySpecificationsNominal Diameter: 460 / 18 mm/inchRated Impedance: 8 ΩProgram Power: 2400 W AESPower handling capacity: 1200 W AESSensitivity: 98 dBFrequency Range: 30 Hz · 1000 HzEffective Piston Diameter: 395 / 15.6 mm/inchMax Excursion Before Damage (peak to peak): 52 / 2.1 mm/inchMinimum Impedance: 6.3 ΩVoice Coil Diameter: 100 / 4 mm/inchVoice Coil Material: CopperVoice Coil Winding Depth: 25 / 1.0 mm/inchNumber of layers: 2Kind of layer: inside / outsideTop Plate Thickness: 15 / 0.6 mm/inchCone Material: No pressed pulpCone Design: StraightSurround Material: PolycottonSurround Design: Triple rollDC resistance: 5.1ΩMechanical factor: 6.5Electrical factor: 0.27Total factor: 0.26BL Factor: 27.8 T · mEffective Moving Mass: 201 gEquivalent Cas air load: 257 litersEffettive piston area: 0.122 m²Max. linear excursion (mathematical): 8.8 mmVoice - coil inductance @ 1kHz: 2.5 mHHalf-space efficiency: 3.01%Overall Diameter: 465 / 18.3 mm/inchBolt Circle Diameter: 442-447 / 17.4-17.6 mm/inchBolt Hole Diameter: 6.5 / 0.3 mm/inchFront Mount Baffle Cut-out: 424 / 16.7 mm/inchRear Mount Baffle Cut-out: 424 / 16.7 mm/inchDepth: 205 / 8.1 mm/inchVolume occupied by the driver: 5.5 / 0.19 liters/ft³Net Weight: 9.1 / 20.2 kg/lbs