RCF LF18G401

The LF18G401 is a 18-inch woofer with linear frequency response cheracteristics and very high power handling.

The LF18G401 uses a fibre loaded cone assembly along with a high excursion triple roll, constant geometry surround.
This combination provides remarkable strength and peak to peak maximum excursion of 50mm.

Features:

-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

Applications:

• The LF18G401 is ideal for use in applications where incredible power handling, long excursion and perfect control is required.
• Ideal for high quality professional bass reflex and bass-horn system.
• The robust machanical design and optimised weight of the device make it desiderable for use in fixed installation or portable professional loudspeaker system.

General Specifications:

Nominal Diameter: 460 / 18 mm/inch
Rated Impedance: 8 Ω
Program Power: 1800 W AES
Power handling capacity: 900 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): 50 / 2.0 mm/inch
Minimum Impedance: 5.9 Ω
Voice Coil Diameter: 100 / 4 mm/inch
Voice Coil Material: Copper
Voice Coil Winding Depth: 23 / 0.9 mm/inch
Number of layers: 2 Kind of layer: inside / outside
Top Plate Thickness: 12 / 0.5 mm/inch
Cone Material: No pressed pulp
Cone Design: Straight
Surround Material: Polycotton
Surround Design: Triple roll Thiele/Small Parameters
DC resistance: 4.8Ω
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 liters
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 / 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: 7.0 / 0.25 liters/ft³
Net Weight: 13 / 28.9 kg/lbs
Shipping weight: 13.7 / 30.4 kg/lbs