Eighteen Sound 15ND930 16Ω

16Ω

Subwoofer

Nominal diameter15″ / 380 mm
Resonance38 Hz
Q factor0.39
Sensitivity95.2 dB
Linear excursion± 7.5 mm
Program Power800 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

Specifications

  • Sensitivity (1W, 1m, infinite baffle) SPL1W 95.2dB
  • Frequency response 40 - 4100Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 38Hz
  • Mechanical quality factor QMS 9.50
  • Electrical quality factor QES 0.40
  • Total quality factor QTS 0.39

Large signal parameters

  • Maximum linear excursion (one way) xmax 7.5mm
  • Air volume displaced at xmax VD 638cm³
  • Power handling P 500W
  • Program power Pmax 800W

Voice Coil

  • Nominal impedance Z 16Ω
  • DC resistance RE 10.9Ω
  • Inductance (1kHz) LE 2.5mH
  • VC Diameter 75mm

Magnet

  • Force factor Bl 24.2N/A
  • Motor constant Bl/√RE 7.33N/√W

Diaphragm

  • Effective diameter 329mm
  • Effective area SD 850cm²
  • Moving mass MMS 92g
  • Moving mass (without air load) MMD 74.7g

Suspensions

  • Stiffness KMS 5.24N/mm
  • Compliance CMS 191µm/N
  • Equivalent volume to the compliance VAS 195L
  • Mechanical resistance RMS 2.31N·s/m

Dimensions

  • Nominal diameter 15
  • 380mm
  • Overall diameter 387mm
  • Baffle cutout diameter 353mm
  • Overall depth 177mm
  • Flange thickness 11mm
  • Mounting depth 166mm
  • Volume occupied by the driver (estimated) 2.7L
  • Net weight 4.0kg
Eighteen Sound 15ND930 16Ω Impedance
Eighteen Sound 15ND930 16Ω SPL
Eighteen Sound 15ND930 16Ω Dimensions

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