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LF18X401

WOOFER

Very linear frequency response characteristics, extreme high power handling while generating the lowest harmonic distortion of any comparable 18-inch transducer within its application range.

The LF18X401 uses a fibre loaded cone assembly along with a high excursion triple roll surround. This combination provides remarkable strength and a peak to peak maximum excursion of 50 mm. The new dual forced hyper-venting system guarantee a very efficient voice coil ventilation for minimum power compression and incredible power handling.

Applications
  • • The LF18X401 is ideal for use in applications where sizable amounts of low frequency, long excursion and low distortion acoustic power is desired.
  • • The robust mechanical design and optimised weight of the device make it desirable for use in fixed installation or touring professional loudspeaker systems.
  • • The transducer's low frequency extension, coupled with its extremely low generation of harmonic distortion, also makes it ideal for use within critical listening applications such as studio monitoring subwoofer systems.
Part Number
  • • 11100089
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
  • 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

The data are not binding; RCF reserves the right to modify the data at any time and without previous notice.

The data are not binding; RCF reserves the right to modify the data at any time and without previous notice.