RCF LF 18 G 401

• 4-inch, fiberglass inside/outside copper voice coil
• 1800W continuous program power handling
• 98 dB Sensitivity
• 30 Hz – 1 kHz Frequency range
• Dual spider design with silicon based dampening control
• Triple-roll surround and corrugated straight cone geometry

General Specifications

• Nominal Diameter: 460 / 18 inch
• Rated Impedance: 8 O
• Program Power: 1800 W AES
• Power handling capacity: 900 W AES
• Sensitivity: 98 dB
• Frequency Range: 30 Hz - 1000 Hz
• Effective Piston Diameter: 395 mm / 15.6 inch
• Max Excursion Before Damage (peak to peak): 50 mm / 2.0 inch
• Minimum Impedance: 5.9 O
• Voice Coil Diameter: 100 mm / 4 inch
• Voice Coil Material: Copper
• Voice Coil Winding Depth: 23 mm / 0.9 inch
• Number of layers: 2
• Kind of layer: inside / outside
• Top Plate Thickness: 12 mm / 0.5 inch
• Cone Material: No pressed pulp
• Cone Design: Straight
• Surround Material: Polycotton
• Surround Design: Triple roll

Thiele/Small Parameters

• Fs: 33Hz
• DC resistance: 4.8O
• Mechanical factor: 7.6
• Electrical factor: 0.30
• Total factor: 0.29
• BL Factor: 24.6 T · m
• Effective Moving Mass: 182 g
• Equivalent Cas air load: 268 litres
• Effettive piston area: 0.122 m²
• Max. linear excursion (mathematical): 8.5 mm
• Voice - coil inductance @ 1kHz: 2.4 mH
• Half-space efficiency: 3.09%

Mounting information

• Overall Diameter: 465 mm / 18.3 inch
• Bolt Circle Diameter: 442-447 mm / 17.4-17.6 inch
• Bolt Hole Diameter: 6.5 mm / 0.3 inch
• Front Mount Baffle Cut-out: 424 mm / 16.7 inch
• Rear Mount Baffle Cut-out: 424 mm / 16.7 inch
• Depth: 205 mm / 8.1 inch
• Volume occupied by the driver: 7.0 litres / 0.25 ft³
• Net Weight: 13 / 28.9 kg/lbs