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Continuous Power Handling
Voice Coil Diameter
Magnet Material
 
 
 

Specifications

  • Nominal Diameter460 mm (18.0 in)
  • Nominal Impedance4 Ω
  • Minimum Impedance4.5 Ω
  • Nominal Power Handling11199 W
  • Continuous Power Handling22400 W
  • Sensitivity395.0 dB
  • Frequency Range35 - 1000 Hz
  • Voice Coil Diameter100 mm (4.0 in)
  • Winding MaterialCopper
  • Former MaterialGlass Fibre
  • Winding Depth25 mm (1.0 in)
  • Magnetic Gap Depth12 mm (0.5 in)
  • Flux Density1.2 T

Design

  • Surround ShapeTriple Roll
  • Cone ShapeRadial
  • Magnet MaterialNeodymium Inside Slug
  • SpiderDouble Silicone
  • Pole DesignT-Pole
  • Woofer Cone TreatmentTWP Waterproof Both Sides
  • Recommended Enclosure160.0 dm3 (5.65 ft3)
  • Recommended Tuning37 Hz

Parameters4

  • Resonance Frequency30 Hz
  • Re3.7 Ω
  • Qes0.28
  • Qms6.2
  • Qts0.27
  • Vas203.5 dm3 (7.19 ft3)
  • Sd1210.0 cm2 (187.6 in2)
  • η₀1.95 %
  • Xmax9.0 mm
  • Xvar11.0 mm
  • Mms244 g
  • Bl24.7 Txm
  • Le1.7 mH
  • EBP107 Hz

Mounting And Shipping Info

  • Overall Diameter460 mm (18.0 in)
  • Bolt Circle Diameter440 mm (17.3 in)
  • Baffle Cutout Diameter422.0 mm (16.6 in)
  • Depth209 mm (8.2 in)
  • Flange and Gasket Thickness16 mm (0.62 in)
  • Air Volume Occupied by Driver8.5 dm3 (0.3 ft3)
  • Net Weight9.3 kg (20.5 lb)
  • Shipping Weight10.9 kg (24.03 lb)
  • Shipping Box500x495x275 mm (19.69x19.49x10.83 in)

Service Kit

  • RCK18NW1004
  • 2 hours test made with continuous pink noise signal (6 dB crest factor) within the range Fs-10Fs. Power calculated on rated minimum impedance. Loudspeaker in free air.
  • Power on Continuous Program is defined as 3 dB greater than the Nominal rating.
  • Applied RMS Voltage is set to 2V for 4 ohms Nominal Impedance.
  • Thiele-Small parameters are measured after a high level 20 Hz sine wave preconditioning test.