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Continuous Power Handling
Voice Coil Diameter
Magnet Material
 
 
 
 

Key Features

  • 500 W continuous program power capacity
  • 64 mm (2.5 in) aluminium voice coil
  • 50 - 3000 Hz response
  • 98 dB sensitivity

Specifications

  • Nominal Diameter320 mm (12.0 in)
  • Nominal Impedance8 Ω
  • Minimum Impedance6.7 Ω
  • Nominal Power Handling1250 W
  • Continuous Power Handling2500 W
  • Sensitivity398.0 dB
  • Frequency Range55 - 3000 Hz
  • Voice Coil Diameter64 mm (2.5 in)
  • Winding MaterialAluminium
  • Former MaterialGlass Fibre
  • Winding Depth14.0 mm (0.55 in)
  • Magnetic Gap Depth8.0 mm (0.31 in)
  • Flux Density1.3 T

Design

  • Surround ShapeDouble Roll
  • Cone ShapeExponential
  • Magnet MaterialFerrite
  • SpiderSingle
  • Pole DesignT-Pole
  • Woofer Cone TreatmentWP Waterproof Front Side
  • Recommended Enclosure40.0 dm3 (1.4 ft3)
  • Recommended Tuning55 Hz

Parameters4

  • Resonance Frequency55 Hz
  • Re5.2 Ω
  • Qes0.32
  • Qms3.5
  • Qts0.29
  • Vas64.0 dm3 (2.26 ft3)
  • Sd522.0 cm2 (80.9 in2)
  • η₀3.6 %
  • Xmax5.0 mm
  • Xvar5.0 mm
  • Mms47.0 g
  • Bl15.5 Txm
  • Le1.0 mH
  • EBP171 Hz

Mounting And Shipping Info

  • Overall Diameter315 mm (12.4 in)
  • Bolt Circle Diameter298 mm (11.7 in)
  • Baffle Cutout Diameter283.0 mm (11.1 in)
  • Depth136 mm (5.35 in)
  • Flange and Gasket Thickness13 mm (0.51 in)
  • Air Volume Occupied by Driver3.0 dm3 (0.1 ft3)
  • Net Weight5.6 kg (12.3 lb)
  • Shipping Units1
  • Shipping Weight6.5 kg (14.33 lb)
  • Shipping Box360x360x200 mm (14.17x14.17x7.87 in)

Service Kit

  • RCK12FW648
  • 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 2.83 V for 8 ohms Nominal Impedance.
  • Thiele-Small parameters are measured after a high level 20 Hz sine wave preconditioning test.