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11_11_44_355_de_990_riscalata%2000
Continuous Power Handling
Voice Coil Diameter
Diaphragm Material
Throat Diameter

The DE990TN is a uniquely compact 86mm (3.4 in) voice coil, neodymium high frequency driver. The compact 118mm diameter was achieved using a specially milled inside ring neodymium magnet. The diaphragm used in the DE990TN has been completely redesigned to incorporate a bent edge voice coil former, new dome and surround geometry and an optimized phase plug. These modifications combine to better control diaphragm displacement and deformations, resulting in lower distortion and a smoother higher frequency response above 10kHz. 

 
 
 

Key Features

  • 200 W continuous program power capacity
  • 1.4" horn throat diameter
  • 86 mm (3.4 in) aluminium voice coil
  • Titanium diaphragm
  • 500 - 18000 Hz response
  • 107.5 dB sensitivity
  • Neodymium magnet assembly with shorting copper cap

Specifications1

  • Throat Diameter36 mm (1.4 in)
  • Nominal Impedance8 Ω
  • Minimum Impedance7.6 Ω
  • Nominal Power Handling2100 W
  • Continuous Power Handling3200 W
  • Sensitivity4107.5 dB
  • Frequency Range500.0 - 18.0 kHz
  • Recommended Crossover51.0 kHz
  • Voice Coil Diameter86 mm (3.4 in)
  • Winding MaterialAluminium
  • Inductance0.1 mH
  • Diaphragm MaterialTitanium
  • Flux Density1.9 T
  • Magnet MaterialNeo Inside Ring

Mounting And Shipping Info

  • Four M6 holes 90° on 102 mm (4 in) diameter
  • Overall Diameter118 mm (4.65 in)
  • Depth63 mm (2.48 in)
  • Net Weight1.85 kg (4.08 lb)
  • Shipping Units4
  • Shipping Weight8.0 kg (17.64 lb)
  • Shipping Box265x135x170 mm (10.43x5.31x6.69 in)

Replacement Diaphragm

  • MMD990TN8
  • Driver mounted on B&C ME90 horn
  • 2 hour test made with continuous pink noise signal (6 dB crest factor) within the range from the recommended crossover frequency to 20 kHz. Power calculated on rated minimum impedance.
  • 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.
  • 12 dB/oct. or higher slope high-pass filter.
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