RCF LF18G400 WOOFER

4-inch, fiberglass inside/outside copper voice coil

2000W continuous program power handling

97.5 dB Sensitivity

25 Hz – 1 kHz Frequency range

T-pole, curved on top. 14mm top plate for minimum power compression

Dual spider design with silicon based dampening control

Triple-roll surround and corrugated straight cone geometry

Nominal Diameter: 460 / 18 mm/inch

Rated Impedance: 8 Ω

Program Power: 2000 W AES

Power handling capacity: 1000 W AES

Sensitivity: 97.5 dB

Frequency Range: 25 Hz ÷ 1000 Hz

Effective Piston Diameter: 395 / 15.6 mm/inch

Max Excursion Before Damage (peak to peak): 50 / 2.0 mm/inch

Minimum Impedance: 6.0 Ω

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: 14 / 0.55 mm/inch

Cone Material: No pressed pulp

Cone Design: Straight

Surround Material: Polycotton

Surround Design: Triple roll

DC resistance: 5.1Ω

Mechanical factor: 4.6

Electrical factor: 0.29

Total factor: 0.27

BL Factor: 24.2 T · m

Effective Moving Mass: 190 g

Equivalent Cas air load: 360 liters

Effettive piston area: 0.122 m²

Max. linear excursion (mathematical): 9.0 mm

Voice - coil inductance @ 1kHz: 2.5 mH

Half-space efficiency: 2.63%

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: 210 / 8.3 mm/inch

Volume occupied by the driver: 7.0 / 0.25 liters/ft³

Net Weight: 13.3 / 29.3 kg/lbs

Shipping weight: 14.3 / 31.5 kg/lbs