18-in Woofer w/neodymium transducer, the lowest power compression, 8 Ohms 2400 Watts Max

Incredibly linear frequency response characteristics,the highest power handling of any comparable 18-in ch neodymium transducer, the lowest power compression.The LF18N401 uses a fibre loaded cone assembly along w/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 & higher power handling. The LF18N401 is ideal for use in applications where incredible power handling is required,long excursion & light weight. Specially designedfor touring,perfect for high quality professional bass reflex & bass-horn system. The transducer's low frequency extension & control also makes it ideal for use within critical listening applications as studio monitoring subwoofer system. 4 - inch, fiberglass inside-outside copper voice coil 2400 Watt continuous program power handling 98 dB Sensitivity 30 Hz - 1 kHz Frequency range Dual-forced air ventilation & 15mm top plate for minimum power compression Dual spider design w/silicon based dampening control Triple-roll surround & corrugated straight cone geometry Nominal Diameter: 460 / 18 mm/inch Rated Impedance: 8 Ohms Program Power: 2400 W AES Power handling capacity: 1200 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: 52 / 2.1 mm/inch Minimum Impedance: 6.3 Ohms 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: 15 / 0.6 mm/inch Cone Material: No pressed pulp Cone Design: Straight Surround Material: Polycotton Surround Design: Triple roll THIELE/SMALL PARAMETERS DC resistance: 5.1 Ohms Mechanical factor: 6.5 Electrical factor: 0.27 Total factor: 0.26 BL Factor: 27.8 T - m Effective Moving Mass: 201 g Equivalent Cas air load: 257 liters Effettive piston area: 0.122 m-Squared Max. linear excursion mathematical: 8.8 mm Voice - coil inductance at 1kHz: 2.5 mH Half-space efficiency: 3.01% 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: 5.5 / 0.19