DB Drive WDX8G2F-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 81.7dB

Thiele & Small parameters

• Resonance frequency (free air) fS 40.1Hz
• Mechanical quality factor QMS 3.05
• Electrical quality factor QES 0.59
• Total quality factor QTS 0.49

Large signal parameters

• Maximum linear excursion xmax 12mm
• Air volume displaced at xmax VD 241cm³
• Power handling P 350W
• Program power Pmax 700W

Voice Coil

• Nominal impedance Z 2 x 4Ω
• DC resistance (in series) RE 6.2Ω
• Inductance (1kHz, in series, estimated) LE 2.99mH
• VC Diameter 50.8mm
• Former material Black Aluminum

Magnet

• Force factor (in series) Bl 16.4N/A
• Motor constant Bl/√RE 6.58N/√W

Diaphragm

• Effective diameter 160mm
• Effective area SD 201cm²
• Moving mass MMS 102g
• Moving mass (without air load) MMD 99.7g
• Material Non-Pressed paper

Suspensions

• Stiffness KMS 6.45N/mm
• Compliance CMS 155µm/N
• Equivalent volume to the compliance VAS 8.88L
• Mechanical resistance RMS 8.43N·s/m
• Surround material Foam

Dimensions

• Nominal diameter 8″
• 203mm
• Overall diameter 223mm
• Baffle cutout diameter 186mm
• Mounting depth 114mm
• Volume occupied by the driver (estimated) 1.1L
• Frame material Aluminium