The L18S801 is the RCF classical high efficiency 18" woofer. A perfect blend of voice coil length, moving mass weight and suspensions control makes this transducer the preferred solution for many speakers and rental companies. Voice coil construction, suspension and cone materials are upgrade in order to withstand up to 700 watt RMS power.
Features 4-inch, fiberglass inside/outside copper voice coil 1400W continuous program power handling 99.5 dB Sensitivity 38 Hz – 1 kHz Frequency range Dual spider design with silicon based dampening control M-roll surround and exponential cone geometry
General Specifications Nominal Diameter: 460 / 18 mm/inch Rated Impedance: 8 Ohm Program Power: 1400 W AES Power handling capacity: 700 W AES Sensitivity: 99.5 dB Frequency Range: 38 Hz ÷ 1000 Hz Effective Piston Diameter: 380 / 15 mm/inch Max Excursion Before Damage (peak to peak): 40 / 1.6 mm/inch Minimum Impedance: 6.3 Ohm Voice Coil Diameter: 100 / 4 mm/inch Voice Coil Material: Copper Voice Coil Winding Depth: 18.5 / 0.7 mm/inch Number of layers: 2 Kind of layer: inside / outside Top Plate Thickness: 10 / 0.4 mm/inch Cone Material: No pressed pulp Cone Design: Curved Surround Material: Polycotton Surround Design: M - roll
Thiele/Small Parameters Resonance frequency: 39 Hz DC resistance: 4.9 Ohm Mechanical factor: 8.3 Electrical factor: 0.30 Total factor: 0.29 BL Factor: 24.5 T · m Effective Moving Mass: 148 g Equivalent Cas air load: 206 liters Effettive piston area: 0.113 m² Max. linear excursion (mathematical): 6.8 mm Voice - coil inductance @ 1kHz: 1.7 mH Half-space efficiency: 3.93%
Mounting information Overall Diameter: 470 / 18.5 mm/inch Bolt Circle Diameter: 438 / 17.2 mm/inch Bolt Hole Diameter: 8 / 0.3 mm/inch Front Mount Baffle Cut-out: 416 / 16.4 mm/inch Rear Mount Baffle Cut-out: 416 / 16.4 mm/inch Depth: 209 / 8.3 mm/inch Volume occupied by the driver: 6.5 / 0.23 liters/ft³ Net Weight: 13.1 / 29.1 kg/lbs