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.

 

  • 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
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