RCF LF18X401 WOOFER

Features

4-inch, fiberglass inside/outside copper voice coil

3000W continuous program power handling

97.5 dB Sensitivity

25 Hz – 1 kHz Frequency range

Dual Forced Hyperventing System

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: 3000 W AES

Power handling capacity: 1500 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 / 1.97 mm/inch

Minimum Impedance: 6.5 Ω

Voice Coil Diameter: 100 / 4 mm/inch

Voice Coil Material: Copper

Voice Coil Winding Depth: 30 / 1.18 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

Resonance frequency: 30 Hz

DC resistance: 5.4Ω

Mechanical factor: 7.4

Electrical factor: 0.31

Total factor: 0.30

BL Factor: 26.5 T · m

Effective Moving Mass: 215 g

Equivalent Cas air load: 274 liters

Effettive piston area: 0.122 m²

Max. linear excursion (mathematical): 11.5 mm

Voice - coil inductance @ 1kHz: 2,5 mH

Half-space efficiency: 2.30%

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: 188 / 7.4 mm/inch

Volume occupied by the driver: 6.5 / 0.23 liters/ft³

Net Weight: 13.3 / 29.3 kg/lbs

Shipping information

Shipping weight: 14.3 / 31.5 kg/lbs