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  • 89 dB SPL 1W / 1m average sensitivity
  • 88 mm (3.5 in) voice coil
  • 950 W AES power handling
  • Extremely balanced BL shape
  • Optimized thermal conductivity
  • Maximum linearity and inductance symmetry
  • Ideal for compact subwoofers
  • Very light Neo Motor
The 15NTLS3500 represents the latest 18sound technology for high quality, low distortion applications. The Tetracoil motor structure maximize its benefits in therms of thermal dissipation and Bl symmetry, making the 15NTLS3500 the perfect component for high quality, low tuning, compact subwoofers.
Dual gap motors linearize inductance and the perfect balance we reached between the motor and the ultra linear 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 make the 15NTLS3500 the perfect component for highest quality line arrays and two way systems, thanks also to its 1900 watts power handling capabilities. 




Mounting and Shipping Info

  • Nominal Impedance8 Ω
  • Minimum Impedance5.8 Ω
  • Nominal Power Handling1950 W
  • Continuous Power Handling21900 W
  • Sensitivity389.0 dB
  • Frequency Range30 - 2000 Hz
  • Voice Coil Diameter88 mm (3.5 in)
  • Winding Materialcopper
  • Winding Depth36.0 mm (1.42 in)
  • Magnetic Gap Depth11.0 mm (0.43 in)
  • Surround ShapeSingle roll - Rubber
  • Cone ShapeStraight
  • Magnet MaterialNeo
  • Woofer Cone TreatmentWeather protected
  • Recommended Enclosure80.0 dm3 (2.83 ft3)
  • Recommended Tuning26 Hz
  • Resonance Frequency28 Hz
  • Re5.2 Ω
  • Qes0.44
  • Qms8.2
  • Qts0.42
  • Vas141.0 dm3 (4.98 ft3)
  • Sd881.0 cm2 (136.56 in2)
  • η₀0.7 %
  • Xmax15.3 mm
  • Xvar12.5 mm
  • Mms250.0 g
  • Bl21.6 Txm
  • Le1.65 mH
  • EBP63 Hz
  • Overall Diameter393 mm (15.47 in)
  • Bolt Circle Diameter371 mm (14.61 in)
  • Baffle Cutout Diameter357.0 mm (14.06 in)
  • Depth261 mm (10.28 in)
  • Flange and Gasket Thickness17 mm (0.67 in)
  • Net Weight8.3 kg (18.3 lb)
  • Shipping Weight9.0 kg (19.84 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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