Fi Car Audio Q12 D2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86dB

Thiele & Small parameters

• Resonance frequency (free air) fS 32.7Hz
• Mechanical quality factor QMS 7.85
• Electrical quality factor QES 0.41
• Total quality factor QTS 0.39

Large signal parameters

• Maximum linear excursion xmax 34mm
• Air volume displaced at xmax VD 1632cm³
• Power handling P 1750W
• Program power Pmax 3500W

Voice Coil

• Nominal impedance Z 2 x 2Ω
• DC resistance (in series) RE 3.6Ω
• Inductance (1kHz, in series, estimated) LE 3.2mH

Magnet

• Force factor (in series) Bl 21.4N/A
• Motor constant Bl/√RE 11.3N/√W

Diaphragm

• Effective diameter 247mm
• Effective area SD 480cm²
• Moving mass MMS 256g
• Moving mass (without air load) MMD 248g

Suspensions

• Stiffness KMS 10.8N/mm
• Compliance CMS 92.7µm/N
• Equivalent volume to the compliance VAS 29.9L
• Mechanical resistance RMS 6.7N·s/m

Dimensions

• Nominal diameter 12″
• 318mm
• Overall diameter 318mm
• Baffle cutout diameter 283mm
• Mounting depth 184mm
• Volume occupied by the driver 2.27L