DB Drive WDX18G5.2

2x2Ω

Subwoofer

Nominal diameter18″ / 450 mm
Resonance31.6 Hz
Q factor0.62
Sensitivity88.9 dB
Linear excursion± 25 mm
Program Power6000 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

Specifications

  • Sensitivity (1W, 1m, infinite baffle) SPL1W 88.9dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 31.6Hz
  • Mechanical quality factor QMS 4.48
  • Electrical quality factor QES 0.72
  • Total quality factor QTS 0.62

Large signal parameters

  • Maximum linear excursion (one way) xmax 25mm
  • Air volume displaced at xmax VD 3061cm³
  • Power handling P 3000W
  • Program power Pmax 6000W

Voice Coil

  • Nominal impedance Z 2 x 2Ω
  • DC resistance (in series) RE 4.0Ω
  • Inductance (1kHz, in series, estimated) LE 5.41mH
  • VC Diameter 76.2mm
  • Former material Anodized aluminum

Magnet

  • Force factor (in series) Bl 23N/A
  • Motor constant Bl/√RE 11.5N/√W

Diaphragm

  • Effective diameter 395mm
  • Effective area SD 1224cm²
  • Moving mass MMS 481g
  • Moving mass (without air load) MMD 451g
  • Material Non-Pressed paper

Suspensions

  • Stiffness KMS 18.9N/mm
  • Compliance CMS 53µm/N
  • Equivalent volume to the compliance VAS 113L
  • Mechanical resistance RMS 21.3N·s/m
  • Surround material Foam

Dimensions

  • Nominal diameter 18
  • 450mm
  • Overall diameter 469mm
  • Baffle cutout diameter 422mm
  • Mounting depth 250mm
  • Volume occupied by the driver (estimated) 7.4L
  • Frame material Aluminium

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