DB Drive WDX12 7KD4

2x2Ω
2x4Ω

Subwoofer

Nominal diameter12″ / 305 mm
Resonance40.2 Hz
Q factor0.43
Sensitivity84.4 dB
Program Power7000 W
Discontinued
DB Drive WDX12 7KD4 SubwooferDB Drive WDX12 7KD4 Subwoofer
Excursion
Velocity
SPL
Phase
Group delay
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 84.4dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 40.2Hz
  • Mechanical quality factor QMS 6.16
  • Electrical quality factor QES 0.46
  • Total quality factor QTS 0.43

Large signal parameters

  • Power handling P 3500W
  • Program power Pmax 7000W

Voice Coil

  • Nominal impedance Z 2 x 4Ω
  • DC resistance (in series) RE 6.8Ω
  • Inductance (1kHz, in series, estimated) LE 7.22mH

Magnet

  • Force factor (in series) Bl 35.4N/A
  • Motor constant Bl/√RE 13.6N/√W

Diaphragm

  • Effective diameter 234mm
  • Effective area SD 432cm²
  • Moving mass MMS 334g
  • Moving mass (without air load) MMD 328g

Suspensions

  • Stiffness KMS 20N/mm
  • Compliance CMS 49.9µm/N
  • Equivalent volume to the compliance VAS 13.2L
  • Mechanical resistance RMS 13.7N·s/m

Dimensions

  • Nominal diameter 12″
  • 305mm
  • Volume occupied by the driver (estimated) 2.4L
Impedance
Step response
Tone Burst
PDF fileDatasheet

Export this driver to a simulation software:

Closed Box Simulator·Speakerbench logoSpeakerbenchWinISD logoWinISDBasta! logoBasta!Hornresp logoHornrespQSpeakers logoQSpeakersSpeakerSim logoSpeakerSimAmplion logoAmplion

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