DB Drive WDX8 3K

2x4Ω

Subwoofer

Nominal diameter8″ / 203 mm
Resonance43.5 Hz
Q factor0.50
Sensitivity83.4 dB
Linear excursion± 12.5 mm
Program Power1200 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
  • Sensitivity (1W, 1m, infinite baffle) SPL1W 83.4dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 43.5Hz
  • Mechanical quality factor QMS 4.45
  • Electrical quality factor QES 0.56
  • Total quality factor QTS 0.50

Large signal parameters

  • Maximum linear excursion xmax 12.5mm
  • Air volume displaced at xmax VD 266cm³
  • Power handling P 600W
  • Program power Pmax 1200W

Voice Coil

  • Nominal impedance Z 2 x 4Ω
  • DC resistance (in series) RE 7.2Ω
  • Inductance (1kHz, in series, estimated) LE 3.17mH

Magnet

  • Force factor (in series) Bl 17.7N/A
  • Motor constant Bl/√RE 6.6N/√W

Diaphragm

  • Effective diameter 164mm
  • Effective area SD 212cm²
  • Moving mass MMS 89.2g
  • Moving mass (without air load) MMD 87g

Suspensions

  • Stiffness KMS 6.67N/mm
  • Compliance CMS 150µm/N
  • Equivalent volume to the compliance VAS 9.6L
  • Mechanical resistance RMS 5.48N·s/m

Dimensions

  • Nominal diameter 8
  • 203mm
  • Volume occupied by the driver (estimated) 0.85L


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