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8nsm64%20018%20nsm%2064%20%2803%298nsm64%2000
Continuous Power Handling
Voice Coil Diameter
Magnet Material
Available exclusively with 6.3+4.8 mm fast-on terminal tab
 
 
 

Key Features

  • 500 W continuous program power capacity
  • 64 mm (2.5 in) aluminium voice coil
  • 245 - 2000 Hz response
  • 100 dB sensitivity
  • Ideal for Direct Radiation and Horn Loaded Midrange application

Specifications

  • Nominal Diameter200 mm (8.0 in)
  • Nominal Impedance8 Ω
  • Minimum Impedance8.2 Ω
  • Nominal Power Handling1250 W
  • Continuous Power Handling2500 W
  • Sensitivity3100.0 dB
  • Frequency Range245 - 2000 Hz
  • Voice Coil Diameter64 mm (2.5 in)
  • Winding MaterialAluminium
  • Former MaterialGlass Fibre
  • Winding Depth13.0 mm (0.51 in)
  • Magnetic Gap Depth10.0 mm (0.39 in)
  • Flux Density1.55 T

Design

  • Surround ShapeDouble Roll
  • Cone ShapeRadial
  • Magnet MaterialNeodymium Ring
  • SpiderSingle
  • Pole DesignT-Pole
  • Woofer Cone TreatmentWP Waterproof Front Side

Parameters4

  • Resonance Frequency245 Hz
  • Re5.7 Ω
  • Qes0.35
  • Qms9.3
  • Qts0.34
  • Vas1.5 dm3 (0.05 ft3)
  • Sd220.0 cm2 (34.1 in2)
  • η₀4.5 %
  • Xmax2.0 mm
  • Xvar1.7 mm
  • Mms19.0 g
  • Bl22.0 Txm
  • Le0.6 mH
  • EBP700 Hz

Mounting And Shipping Info

  • Overall Diameter239 mm (9.41 in)
  • Bolt Circle Diameter222 mm (8.74 in)
  • Baffle Cutout Diameter200.0 mm (7.87 in)
  • Depth115 mm (4.53 in)
  • Flange and Gasket Thickness16 mm (0.63 in)
  • Air Volume Occupied by Driver3.5 dm3 (0.12 ft3)
  • Net Weight4.85 kg (10.69 lb)
  • Shipping Units1
  • Shipping Weight5.45 kg (12.02 lb)
  • Shipping Box295x314x175 mm (11.61x12.36x6.89 in)

Service Kit

  • RCK008NSM648
  • 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.