Eighteen Sound 15W750

Subwoofer

Nominal diameter15″ / 380 mm
Resonance39 Hz
Q factor0.29
Sensitivity96.6 dB
Linear excursion± 8 mm
Program Power1200 W
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
  • Sensitivity (1W, 1m, infinite baffle) SPL1W 96.6dB
  • Frequency response 40 - 4300Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 39Hz
  • Mechanical quality factor QMS 6.20
  • Electrical quality factor QES 0.30
  • Total quality factor QTS 0.29

Large signal parameters

  • Maximum linear excursion xmax 8mm
  • Air volume displaced at xmax VD 680cm³
  • Power handling P 600W
  • Program power Pmax 1200W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 2.7Ω
  • Inductance (1kHz) LE 0.73mH
  • VC Diameter 75mm
  • Winding material Aluminum

Magnet

  • Force factor Bl 14N/A
  • Motor constant Bl/√RE 8.52N/√W
  • Material Ferrite

Diaphragm

  • Effective diameter 329mm
  • Effective area SD 850cm²
  • Moving mass MMS 89.5g
  • Moving mass (without air load) MMD 72g

Suspensions

  • Stiffness KMS 5.38N/mm
  • Compliance CMS 186µm/N
  • Equivalent volume to the compliance VAS 253L
  • Mechanical resistance RMS 3.54N·s/m

Dimensions

  • Nominal diameter 15
  • 380mm
  • Overall diameter 393mm
  • Baffle cutout diameter 354mm
  • Overall depth 184mm
  • Flange thickness 13mm
  • Mounting depth 171mm
  • Volume occupied by the driver (estimated) 4.3L
  • Net weight 7.9kg
Eighteen Sound 15W750 Impedance
Eighteen Sound 15W750 SPL
Eighteen Sound 15W750 Dimensions

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