RCF 18" Speaker, 1200W, 98dB, 30-1000Hz, X-max 8.8mm, weight 9.1kg Experience exceptional linearity in frequency response with the RCF LF18N401 speaker. Boasting the highest power handling among 18-inch neodymium transducers, it also features the lowest power compression. The speaker utilizes a fiber-loaded cone assembly and a high excursion triple roll surround for optimal performance. The venting system ensures efficient voice coil ventilation, reducing power compression and enhancing 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 minimal power compression - Dual spider design with silicon-based dampening control - Triple-roll surround and corrugated straight cone geometry **General 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: 5.1ohm - 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 - Effective 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 **Shipping information:** - Shipping weight: 9.1 / 20.2 kg/lbs