Skar Audio VD-15 D2

2x2Ω
2x4Ω

Subwoofer

Nominal diameter15″ / 381 mm
Resonance39.7 Hz
Q factor0.72
Sensitivity88.6 dB
Linear excursion± 11 mm
Program power800 W
Discontinued
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 88.6dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 39.7Hz
  • Mechanical quality factor QMS 5.16
  • Electrical quality factor QES 0.84
  • Total quality factor QTS 0.72

Large signal parameters

  • Maximum linear excursion (one way) xmax 11mm
  • Air volume displaced at xmax VD 909cm³
  • Power handling P 500W
  • Program power Pmax 800W

Voice Coil

  • Nominal impedance Z 2 x 2Ω
  • DC resistance (in series) RE 3.9Ω
  • Inductance (1kHz, in series, estimated) LE 3.57mH
  • VC Diameter 51mm

Magnet

  • Force factor (in series) Bl 17.8N/A
  • Motor constant Bl/√RE 9.01N/√W
  • Diameter 160mm

Diaphragm

  • Effective diameter 324mm
  • Effective area SD 826cm²
  • Moving mass (including air load) MMS 268g
  • Moving mass MMD 251g

Suspensions

  • Stiffness KMS 16.7N/mm
  • Compliance CMS 60µm/N
  • Equivalent volume to the compliance VAS 58.1L
  • Mechanical resistance RMS 13N·s/m

Dimensions

  • Nominal diameter 15
  • 381mm
  • Baffle cutout diameter 353mm
  • Mounting depth 176mm
  • Volume occupied by the driver 3.7L

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