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LF18X400

WOOFER

Incredibly 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 LF18X400 uses a fibre loaded cone assembly along with a high excursion triple roll, constant geometry surround. A
fully optimised T-pole design generate the minimum amount of flux modulation. The T-pole also features RCF Precision’s spaced gap demodulation technology, progressively braking the voice coil, providing a much smoother transition for the moving mass as it reaches its maximum excursion limits. Forced air venting system.

Applications
  • • The LF18X400 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 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 system.
Part Number
  • • 11185002
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
  • 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

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.