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23_55_13_349_12ndl88rear_b_riscalata_0012ndl88front_riscalata12ndl88rear_riscalata
Continuous Power Handling
Voice Coil Diameter
Magnet Material
 
 
 
 

Key Features

  • 1400 W continuous program power capacity
  • 88 mm (3.5 in) aluminium voice coil
  • 50 - 3000 Hz response
  • 97 dB sensitivity
  • Aluminium demodulating ring allows a very low distortion figure
  • Double silicone spider with optimized compliance
  • Ventilated voice coil gap for reduced power compression

Specifications

  • Nominal Diameter320 mm (12.0 in)
  • Nominal Impedance4 Ω
  • Minimum Impedance3.8 Ω
  • Nominal Power Handling1700 W
  • Continuous Power Handling21400 W
  • Sensitivity397.0 dB
  • Frequency Range50 - 3000 Hz
  • Voice Coil Diameter88 mm (3.5 in)
  • Winding MaterialAluminium
  • Former MaterialGlass Fibre
  • Winding Depth21.5 mm (0.85 in)
  • Magnetic Gap Depth10.0 mm (0.39 in)
  • Flux Density1.15 T

Design

  • Surround ShapeTriple Roll
  • Cone ShapeExponential
  • Magnet MaterialNeodymium Inside Slug
  • SpiderDouble Silicone
  • Pole DesignT-Pole
  • Woofer Cone TreatmentWP Waterproof Front Side
  • Recommended Enclosure40.0 dm3 (1.41 ft3)
  • Recommended Tuning65 Hz

Parameters4

  • Resonance Frequency48 Hz
  • Re3.1 Ω
  • Qes0.25
  • Qms6.8
  • Qts0.24
  • Vas57.0 dm3 (2.01 ft3)
  • Sd522.0 cm2 (80.91 in2)
  • η₀2.5 %
  • Xmax8.0 mm
  • Xvar11.0 mm
  • Mms73.6 g
  • Bl16.6 Txm
  • Le0.9 mH
  • EBP192 Hz

Mounting And Shipping Info

  • Overall Diameter315 mm (12.4 in)
  • Bolt Circle Diameter298 mm (11.73 in)
  • Baffle Cutout Diameter282.0 mm (11.1 in)
  • Depth140 mm (5.51 in)
  • Flange and Gasket Thickness13 mm (0.51 in)
  • Air Volume Occupied by Driver2.5 dm3 (0.08 ft3)
  • Net Weight4.8 kg (10.58 lb)
  • Shipping Units1
  • Shipping Weight5.7 kg (12.57 lb)
  • Shipping Box360x360x200 mm (14.17x14.17x7.87 in)

Service Kit

  • RCK12NDL884
  • 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 V for 4 ohms Nominal Impedance.
  • Thiele-Small parameters are measured after a high level 20 Hz sine wave preconditioning test.
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