Eighteen Sound 12NTLW2500 8Ω

4Ω
8Ω
16Ω

Subwoofer

Nominal diameter12″ / 310 mm
Resonance60 Hz
Q factor0.38
Sensitivity96 dB
Linear excursion± 7.6 mm
Program Power1000 W
Eighteen Sound 12NTLW2500 8Ω SubwooferEighteen Sound 12NTLW2500 8Ω 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 96dB
  • Frequency response 55 - 4500Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 60Hz
  • Mechanical quality factor QMS 8.40
  • Electrical quality factor QES 0.39
  • Total quality factor QTS 0.38

Large signal parameters

  • Maximum linear excursion (one way) xmax 7.6mm
  • Air volume displaced at xmax VD 404cm³
  • Power handling P 500W
  • Program power Pmax 1000W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.0Ω
  • Inductance (1kHz) LE 0.44mH
  • VC Diameter 64mm
  • Winding height HVC 19.7mm

Magnet

  • Force factor Bl 17.4N/A
  • Motor constant Bl/√RE 7.78N/√W
  • Air gap height HAG 9mm

Diaphragm

  • Effective diameter 260mm
  • Effective area SD 531cm²
  • Moving mass MMS 62g
  • Moving mass (without air load) MMD 53.4g

Suspensions

  • Stiffness KMS 8.93N/mm
  • Compliance CMS 112µm/N
  • Equivalent volume to the compliance VAS 45L
  • Mechanical resistance RMS 2.78N·s/m

Dimensions

  • Nominal diameter 12″
  • 310mm
  • Overall diameter 310mm
  • Baffle cutout diameter 283mm
  • Overall depth 175mm
  • Flange thickness 13mm
  • Mounting depth 162mm
  • Volume occupied by the driver (estimated) 2.2L
  • Net weight 3.6kg
Impedance
SPL
Eighteen Sound 12NTLW2500 8Ω Impedance
Eighteen Sound 12NTLW2500 8Ω SPL
Eighteen Sound 12NTLW2500 8Ω Dimensions
PDF fileDatasheet

Export this driver to a simulation software:

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