RCF LF18X400 WOOFER

Features

4-inch, fiberglass inside/outside copper voice coil

2000W continuous program power handling

97.5 dB Sensitivity

25 Hz – 1 kHz Frequency range

Progressive, spaced, aluminum demodulation rings

Forced air ventilation and 14 mm top plate for minimum 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 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

Thiele/Small Parameters

Resonance frequency: 28 Hz

DC resistance: 5.1Ω

Mechanical factor: 6.5

Electrical factor: 0.29

Total factor: 0.27

BL Factor: 25 T · m

Effective Moving Mass: 192 g

Equivalent Cas air load: 340 liters

Effettive piston area: 0.122 m²

Max. linear excursion (mathematical): 9.0 mm

Voice - coil inductance @ 1kHz: 2.3 mH

Half-space efficiency: 2.64%

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 / 0.25 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 information

Shipping weight: 14.3 / 31.5 kg/lbs