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  • 98.5 dB SPL 1W / 1m average sensitivity
  • 64 mm (2.5 in) Dual voice coil
  • 500 W AES power handling
  • Extremely balanced BL shape for maximum SPL
  • Optimized thermal conductivity
  • Maximum linearity and inductance symmetry for extended mid-band clarity
  • Ideal for two-ways and line array applications
The dual gap family is now complete with the NTLW2500 (2.5" voice coil) speaker platform.

The 12NTLW2500 represents the latest 18sound technology for high quality, low distortion applications. The Dual Gap technology comes directly from the Tetracoil motor structure and uses the same concept to maximize its benefits in terms of thermal dissipation and Bl symmetry to a wider frequency band, making the 12NTLW2500 the perfect component both as a woofer and a midbass, in a perfect power/weight ratio.

The brand new Neo Dual gap motor linearizes inductance and minimizes heating and power compression thanks to the high coil surface that makes heat exchange twice as efficient than with standard single coil drivers.
The perfect balance we reached between the motor and the ultra linear M-roll suspension allows both very high excursion and extreme precision in the mid band with the lowest intermodulation distortion in the professional market.

This features, together with its extreme low weight (only 3.6 Kg) make the 12NTLW2500 the perfect component for highest quality line arrays and two/three way systems, thanks also to its 1000 watts power handling capabilities which put the NTLW2500 above the average performances of 3" voice coils traditional speakers.




Mounting and Shipping Info

  • Nominal Impedance8 Ω
  • Minimum Impedance5.5 Ω
  • Nominal Power Handling1500 W
  • Continuous Power Handling21000 W
  • Sensitivity398.5 dB
  • Frequency Range55 - 4500 Hz
  • Voice Coil Diameter64 mm (2.5 in)
  • Winding Depth19.7 mm (0.78 in)
  • Magnetic Gap Depth9.0 mm (0.35 in)
  • Surround ShapeM-roll
  • Cone ShapeCurvilinear
  • Magnet MaterialNeo
  • Woofer Cone TreatmentWeather protected
  • Recommended Enclosure35.0 dm3 (1.24 ft3)
  • Recommended Tuning65 Hz
  • Resonance Frequency60 Hz
  • Re5.0 Ω
  • Qes0.39
  • Qms8.4
  • Qts0.38
  • Vas45.0 dm3 (1.59 ft3)
  • Sd531.0 cm2 (82.31 in2)
  • η₀2.4 %
  • Xmax7.6 mm
  • Xvar8.0 mm
  • Mms62.0 g
  • Bl17.4 Txm
  • Le0.44 mH
  • EBP153 Hz
  • Overall Diameter310 mm (12.2 in)
  • Bolt Circle Diameter295 mm (11.61 in)
  • Baffle Cutout Diameter283.0 mm (11.14 in)
  • Depth175 mm (6.89 in)
  • Flange and Gasket Thickness13 mm (0.51 in)
  • Net Weight3.6 kg (7.94 lb)
  • 2 hours test made with continuous pink noise signal 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.
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