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LF18 X 400

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.

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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

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

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