Skar Audio SDR-10 D4

2x2Ω
2x4Ω

Subwoofer

Nominal diameter10″ / 261 mm
Resonance39 Hz
Q factor0.61
Sensitivity82.2 dB
Linear excursion± 13.5 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 82.2dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 39Hz
  • Mechanical quality factor QMS 6.08
  • Electrical quality factor QES 0.68
  • Total quality factor QTS 0.61

Large signal parameters

  • Maximum linear excursion xmax 13.5mm
  • Air volume displaced at xmax VD 403cm³
  • Power handling P 600W
  • Program power Pmax 1200W

Voice Coil

  • Nominal impedance Z 2 x 4Ω
  • DC resistance (in series) RE 6.8Ω
  • Inductance (1kHz, in series, estimated) LE 4.93mH
  • VC Diameter 63.5mm
  • Winding material Copper

Magnet

  • Force factor (in series) Bl 21.8N/A
  • Motor constant Bl/√RE 8.36N/√W
  • Diameter 155mm

Diaphragm

  • Effective diameter 195mm
  • Effective area SD 299cm²
  • Moving mass MMS 189g
  • Moving mass (without air load) MMD 185g
  • Material Pressed Paper

Suspensions

  • Stiffness KMS 11.5N/mm
  • Compliance CMS 87µm/N
  • Equivalent volume to the compliance VAS 11L
  • Mechanical resistance RMS 7.61N·s/m
  • Surround material Foam

Dimensions

  • Nominal diameter 10
  • 261mm
  • Overall diameter 261mm
  • Baffle cutout diameter 232mm
  • Overall depth 178mm
  • Flange thickness 22mm
  • Mounting depth 156mm
  • Volume occupied by the driver (estimated) 2.6L


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