DB Drive WDX18G5.2

• 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 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