DB Drive WDX8G0.2

2x2Ω
2x4Ω

Subwoofer

Nominal diameter8″ / 200 mm
Resonance42.1 Hz
Q factor0.41
Sensitivity83.5 dB
Linear excursion± 11 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
  • Sensitivity (1W, 1m, infinite baffle) SPL1W 83.5dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 42.1Hz
  • Mechanical quality factor QMS 2.65
  • Electrical quality factor QES 0.48
  • Total quality factor QTS 0.41

Large signal parameters

  • Maximum linear excursion xmax 11mm
  • Air volume displaced at xmax VD 232cm³
  • Power handling P 400W
  • Program power Pmax 800W

Voice Coil

  • Nominal impedance Z 2 x 2Ω
  • DC resistance (in series) RE 3.6Ω
  • Inductance (1kHz, in series, estimated) LE 1.65mH
  • VC Diameter 50.8mm

Magnet

  • Force factor (in series) Bl 13.7N/A
  • Motor constant Bl/√RE 7.22N/√W

Diaphragm

  • Effective diameter 164mm
  • Effective area SD 211cm²
  • Moving mass MMS 94.9g
  • Moving mass (without air load) MMD 92.6g
  • Material Reinforced paper

Suspensions

  • Stiffness KMS 6.62N/mm
  • Compliance CMS 151µm/N
  • Equivalent volume to the compliance VAS 9.55L
  • Mechanical resistance RMS 9.46N·s/m

Dimensions

  • Nominal diameter 8
  • 200mm
  • Overall diameter 214mm
  • Baffle cutout diameter 231mm
  • Mounting depth 118mm
  • Volume occupied by the driver (estimated) 0.98L


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