RCF LF18N451 Woofer

The LF18N451 is a very high power handling and efficiency transducer specially designed to provide powerful and accurate sub-bass frequencies with low distortion and low power compression. Ultra fast time response. The LF18N451 uses a fibre loaded cone assembly along a large triple roll surround, this combination provides remarkable strength and control. Double silicon spider sysetm ensures excellent control during large excursions. A fully optimazed T-pole design generate the minimum amount of flux modulation. The Dual-forced air venting system provides a very efficient voice coil ventilation to minimize the power compression Features4,5 - inch Inside/Outside copper voice coil3000 Watt continuous program power handling97.5 dB Sensitivity30 Hz - 1 kHz Frequency rangeDual-forced air ventilation for minimum power compressionDual spider designed with silicon based damping controlBL of 30.2 Txm to provide a faster and accurate low frequencySpecificationsNominal Diameter: 460/18 mm/inchRated Impedance: 8 ΩProgram Power: 3000 W AESPower handling capacity: 1500 W AESSensitivity: 97.5 dBFrequency Range: 30 Hz Ã?· 1000 HzEffective Piston Diameter: 395 / 15.6 mm/inchMax Excursion Before Damage (peak to peak): 60/2.36 mm/inchMinimum Impedance: 6.3 ΩVoice Coil Diameter: 115 / 4.5 mm/inchVoice Coil Material: CopperVoice Coil Winding Depth: 26 / 1.02 mm/inchNumber of layers: 2Kind of layer: inside / outsideTop Plate Thickness: 15 / 0.6 mm/inchCone Material: No presed pulpCone Design: CurvedSurround Material: PolycottonSurround Design: Triple rollDC resistance: 5.0ΩMechanical factor: 6.0Electrical factor: 0.25Total factor: 0.24BL Factor: 30.2 T Ã?· mEffective Moving Mass: 235 gEquivalent Cas air load: 245 litersEffettive piston area: 0.122 mÃ?²Max. linear excursion (mathematical): 8.8 mmVoice - coil inductance @ 1kHz: 2.6 mHHalf-space efficiency: 2.54%Overall Diameter: 465 / 18.3 mm/inchBolt Circle Diameter: 442-447 / 17.4-17.6 mm/inchBolt Hole Diameter: 6.5 / 0.25 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/ftÃ?³Net Weight: 10.6 / 23.3 kg/lbs