Price List Rp.4.170.000 RCF Low Frequency Tranduscer L18P300 In production for over 10 years, the L18P300 is an industry standard. The very stromg magnetic unit, with 15mm thick plates and specially designed suspensions ensure an excellent control of amplitude of over +/- 12millimeters. The special cooling system with forced air ventilation offer a great haet dissipation and the minimum levels of power compression available on the market.Voice coil construction, suapensions and cone materials are upgraded in order to withstand up to a Kilowatt RMS power. FEATURES 4-inch, fiberglass inside/outside copper voice coil 2000W continuous program power handling 97 dB Sensitivity 35 Hz – 1.5 kHz Frequency range Forced air ventilation and 15mm top plate for minimum power compression 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 Ω Program Power: 2000 W AES Power handling capacity: 1000 W AES Sensitivity: 97 dB Frequency Range: 35 Hz ÷ 1000 Hz Effective Piston Diameter: 380 / 15 mm/inch Max Excursion Before Damage (peak to peak): 40 / 1.6 mm/inch Minimum Impedance: 6.0 Ω Voice Coil Diameter: 100 / 4 mm/inch Voice Coil Material: Copper Voice Coil Winding Depth: 23 / 0.9 mm/inch Number of layers: inside / outside Kind of layer: 2 Top Plate Thickness: 15 / 0.6 mm/inch Cone Material: No pressed pulp Cone Design: Curved Surround Material: Polycotton Surround Design: M - roll THIELE/SMALL PARAMETERS Resonance frequency: 33 Hz DC resistance: 5.0Ω Mechanical factor: 8.3 Electrical factor: 0.34 Total factor: 0.33 BL Factor: 23.5 T · m Effective Moving Mass: 180 g Equivalent Cas air load: 226 liters Effettive piston area: 0.113 m² Max. linear excursion (mathematical): 7.8 mm Voice - coil inductance @ 1kHz: 1.9 mH Half-space efficiency: 2.30% 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 / mm/inch Volume occupied by the driver: 6.5 / 0.23 liters/ft³ Net Weight: 14 / 31.1 kg/lbs SHIPPING INFORMATION Shipping weight: 14.8 / 32.9 kg/lbs