Skar Audio EVL-65 D4

2x2Ω
2x4Ω

Subwoofer

Nominal diameter6.5″ / 174 mm
Resonance64 Hz
Q factor0.53
Sensitivity81.9 dB
Linear excursion± 6.3 mm
Program Power400 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 81.9dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 64Hz
  • Mechanical quality factor QMS 4.60
  • Electrical quality factor QES 0.60
  • Total quality factor QTS 0.53

Large signal parameters

  • Maximum linear excursion xmax 6.3mm
  • Air volume displaced at xmax VD 71cm³
  • Power handling P 200W
  • Program power Pmax 400W

Voice Coil

  • Nominal impedance Z 2 x 4Ω
  • DC resistance (in series) RE 7.0Ω
  • Inductance (1kHz, in series, estimated) LE 2.1mH
  • VC Diameter 50.8mm
  • Winding material Copper

Magnet

  • Force factor (in series) Bl 15.4N/A
  • Motor constant Bl/√RE 5.82N/√W
  • Diameter 133mm

Diaphragm

  • Effective diameter 120mm
  • Effective area SD 113cm²
  • Moving mass MMS 50.2g
  • Moving mass (without air load) MMD 49.2g
  • Material Pressed Paper

Suspensions

  • Stiffness KMS 8.26N/mm
  • Compliance CMS 121µm/N
  • Equivalent volume to the compliance VAS 2.2L
  • Mechanical resistance RMS 4.39N·s/m
  • Surround material Rubber

Dimensions

  • Nominal diameter 6.5
  • 174mm
  • Overall diameter 174mm
  • Baffle cutout diameter 152mm
  • Overall depth 104mm
  • Flange thickness 15mm
  • Mounting depth 89mm
  • Volume occupied by the driver (estimated) 0.72L


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