Eighteen Sound 15ND940

4Ω
8Ω16Ω

Subwoofer

Nominal diameter15″ / 380 mm
Resonance39 Hz
Q factor0.26
Sensitivity97.4 dB
Linear excursion± 9.5 mm
Program Power1200 W
Eighteen Sound 15ND940 SubwooferEighteen Sound 15ND940 Subwoofer
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply

Specifications

  • Sensitivity (1W, 1m, infinite baffle) SPL1W 97.4dB
  • Frequency response 38 - 3500Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 39Hz
  • Mechanical quality factor QMS 9.10
  • Electrical quality factor QES 0.27
  • Total quality factor QTS 0.26

Large signal parameters

  • Maximum linear excursion xmax 9.5mm
  • Air volume displaced at xmax VD 837cm³
  • Power handling P 600W
  • Program power Pmax 1200W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 2.8Ω
  • Inductance (1kHz) LE 0.39mH
  • VC Diameter 75mm
  • Winding height HVC 23.5mm
  • Winding material Copper

Magnet

  • Force factor Bl 16.6N/A
  • Motor constant Bl/√RE 9.92N/√W
  • Air gap height HAG 9mm
  • Material Neodymium

Diaphragm

  • Effective diameter 329mm
  • Effective area SD 881cm²
  • Moving mass MMS 110g
  • Moving mass (without air load) MMD 90.5g
  • Material Weather protected

Suspensions

  • Stiffness KMS 6.14N/mm
  • Compliance CMS 163µm/N
  • Equivalent volume to the compliance VAS 170L
  • Mechanical resistance RMS 3.44N·s/m

Dimensions

  • Nominal diameter 15″
  • 380mm
  • Overall diameter 392mm
  • Baffle cutout diameter 354mm
  • Overall depth 184mm
  • Flange thickness 13mm
  • Mounting depth 171mm
  • Volume occupied by the driver (estimated) 3.1L
  • Net weight 4.7kg
Impedance
SPL
Eighteen Sound 15ND940 Impedance
Eighteen Sound 15ND940 SPL
Eighteen Sound 15ND940 Dimensions
PDF fileDatasheet

Export this driver to a simulation software:

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