Eighteen Sound 12W500 8Ω

4Ω
8Ω

Woofer

Nominal diameter12″ / 300 mm
Resonance46 Hz
Q factor0.36
Sensitivity96 dB
Linear excursion± 4 mm
Program Power500 W
Eighteen Sound 12W500 8Ω WooferEighteen Sound 12W500 8Ω WooferEighteen Sound 12W500 8Ω Woofer
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 50 - 6000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 46Hz
  • Mechanical quality factor QMS 6.02
  • Electrical quality factor QES 0.38
  • Total quality factor QTS 0.36

Large signal parameters

  • Maximum linear excursion (one way) xmax 4mm
  • Air volume displaced at xmax VD 212cm³
  • Power handling P 350W
  • Program power Pmax 500W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.2Ω
  • Inductance (1kHz) LE 1.12mH
  • VC Diameter 64mm
  • Winding material Aluminum

Magnet

  • Force factor Bl 12.1N/A
  • Motor constant Bl/√RE 5.31N/√W
  • Material Ferrite

Diaphragm

  • Effective diameter 260mm
  • Effective area SD 531cm²
  • Moving mass MMS 36.5g
  • Moving mass (without air load) MMD 27.7g
  • Material Weather protected

Suspensions

  • Stiffness KMS 3.05N/mm
  • Compliance CMS 328µm/N
  • Equivalent volume to the compliance VAS 123L
  • Mechanical resistance RMS 1.75N·s/m

Dimensions

  • Nominal diameter 12″
  • 300mm
  • Overall diameter 315mm
  • Baffle cutout diameter 282mm
  • Overall depth 141mm
  • Flange thickness 16mm
  • Mounting depth 125mm
  • Volume occupied by the driver (estimated) 2.4L
  • Net weight 5.2kg
Impedance
SPL
Eighteen Sound 12W500 8Ω Impedance
Eighteen Sound 12W500 8Ω SPL
Eighteen Sound 12W500 8Ω Dimensions
PDF fileDatasheet

Export this driver to a simulation software:

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