RCF LF18N401, Woofer 18", 1200 Watt RMS / 8 Ohm

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.

Features: 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 and 15mm top plate for minimum power compression Dual spider design with silicon based dampening control Triple-roll surround and corrugated straight cone geometry

Specifications: Nominal Diameter: 460 / 18 mm/inch Rated Impedance: 8 Ohm Program Power: 2400 W AES Power handling capacity: 1200 W AES Sensitivity: 98 dB Frequency Range: 30 Hz ÷ 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 Ohm 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 Ohm 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 m² Max. linear excursion (mathematical): 8.8 mm Voice - coil inductance @ 1kHz: 2.5 mH Half-space efficiency: 3.01%

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: 5.5 / 0.19 liters/ft³ Net Weight: 9.1 / 20.2 kg/lbs