DB Drive WDX6.5G1.4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 80.5dB

Thiele & Small parameters

• Resonance frequency (free air) fS 58.9Hz
• Mechanical quality factor QMS 4.07
• Electrical quality factor QES 0.82
• Total quality factor QTS 0.68

Large signal parameters

• Maximum linear excursion xmax 10mm
• Air volume displaced at xmax VD 143cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 2 x 4Ω
• DC resistance (in series) RE 6.4Ω
• Inductance (1kHz, in series, estimated) LE 2.56mH
• VC Diameter 38.1mm
• Former material Black Aluminum

Magnet

• Force factor (in series) Bl 14.9N/A
• Motor constant Bl/√RE 5.89N/√W

Diaphragm

• Effective diameter 135mm
• Effective area SD 143cm²
• Moving mass MMS 77.2g
• Moving mass (without air load) MMD 75.8g
• Material Non-Pressed paper

Suspensions

• Stiffness KMS 10.5N/mm
• Compliance CMS 95µm/N
• Equivalent volume to the compliance VAS 2.75L
• Mechanical resistance RMS 7.03N·s/m
• Surround material Foam

Dimensions

• Nominal diameter 6.5″
• 165mm
• Overall diameter 181mm
• Baffle cutout diameter 151mm
• Mounting depth 117mm
• Volume occupied by the driver (estimated) 0.63L
• Frame material Aluminium