DB Drive WDX12G0.4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 85.2dB

Thiele & Small parameters

• Resonance frequency (free air) fS 34.8Hz
• Mechanical quality factor QMS 2.88
• Electrical quality factor QES 0.67
• Total quality factor QTS 0.55

Large signal parameters

• Maximum linear excursion xmax 14mm
• Air volume displaced at xmax VD 742cm³
• Power handling P 600W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 2 x 4Ω
• DC resistance (in series) RE 6.8Ω
• Inductance (1kHz, in series, estimated) LE 5.82mH
• VC Diameter 63.5mm

Magnet

• Force factor (in series) Bl 23.1N/A
• Motor constant Bl/√RE 8.86N/√W

Diaphragm

• Effective diameter 260mm
• Effective area SD 530cm²
• Moving mass MMS 242g
• Moving mass (without air load) MMD 233g
• Material Reinforced paper

Suspensions

• Stiffness KMS 11.5N/mm
• Compliance CMS 87µm/N
• Equivalent volume to the compliance VAS 34.6L
• Mechanical resistance RMS 18.4N·s/m

Dimensions

• Nominal diameter 12″
• 304mm
• Overall diameter 315mm
• Baffle cutout diameter 276mm
• Mounting depth 166mm
• Volume occupied by the driver (estimated) 2.6L