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Continuous Power Handling
Voice Coil Diameter
Magnet Material
For simplified cabinet assembly and efficient thermal transfer to the air, our NSM series of sealed back midranges feature a cast aluminum sealed chassis, high strength neodymium motor, and large internal volume for good low frequency performance. Large voice coils provide power handling, while careful selection of suspension and cone components results in exceptional sensitivity. These dedicated narrow-bandwidth midranges offer the lowest distortion at given output of any midrange available. 
 
 
 

Features

  • 220 W continuous program power capacity
  • 38 mm (1.5 in) aluminium voice coil
  • 300 - 3500 Hz response
  • 99 dB sensitivity
  • Ideal for Direct Radiation and Horn Loaded Midrange application
  • Extremely Low Distortion Figure

Specifications

  • Nominal Diameter127 mm (5.0 in)
  • Nominal Impedance8 Ω
  • Minimum Impedance6.3 Ω
  • Nominal Power Handling1110 W
  • Continuous Power Handling2220 W
  • Sensitivity399.0 dB
  • Frequency Range300 - 3500 Hz
  • Voice Coil Diameter38 mm (1.5 in)
  • Winding MaterialAluminium
  • Former MaterialGlass Fibre
  • Winding Depth7.0 mm (0.29 in)
  • Magnetic Gap Depth6.0 mm (0.24 in)
  • Flux Density1.45 T

Design

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

Parameters4

  • Resonance Frequency300 Hz
  • Re5.3 Ω
  • Qes0.99
  • Qms4.1
  • Qts0.79
  • Vas0.3 dm3 (0.01 ft3)
  • Sd95.0 cm2 (14.73 in2)
  • η₀1.15 %
  • Xmax2.2 mm
  • Xvar3.0 mm
  • Mms9.0 g
  • Bl10.1 Txm
  • Le0.15 mH
  • EBP303 Hz

Mounting and Shipping Info

  • Overall Diameter157 mm (6.18 in)
  • Bolt Circle Diameter142 mm (5.59 in)
  • Baffle Cutout Diameter122.0 mm (4.8 in)
  • Depth108 mm (4.25 in)
  • Flange and Gasket Thickness9 mm (0.35 in)
  • Air Volume Occupied by Driver1.2 dm3 (0.04 ft3)
  • Net Weight1.37 kg (3.02 lb)
  • Shipping Units1
  • Shipping Weight1.82 kg (4.01 lb)
  • Shipping Box255x255x150 mm (10.04x10.04x5.91 in)

Service Kit

  • RCK005NSM388
  • 2 hours test made with continuous pink noise signal within the range Fs-10Fs. Power calculated on rated nominal 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.
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