JL Audio 12TW3-D8

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

Thiele & Small parameters

• Resonance frequency (free air) fS 32.7Hz
• Mechanical quality factor QMS 10.07
• Electrical quality factor QES 0.56
• Total quality factor QTS 0.67

Large signal parameters

• Maximum linear excursion xmax 15.2mm
• Air volume displaced at xmax VD 819cm³
• Power handling P 400W
• Program power Pmax 800W

Voice Coil

• Nominal impedance Z 2 x 8Ω
• DC resistance (in series) RE 14.8Ω
• Inductance (1kHz, in series, estimated) LE 14.2mH

Magnet

• Force factor (in series) Bl 39.5N/A
• Motor constant Bl/√RE 10.3N/√W
• Diameter 156mm

Diaphragm

• Effective diameter 262mm
• Effective area SD 539cm²
• Moving mass MMS 286g
• Moving mass (without air load) MMD 277g

Suspensions

• Stiffness KMS 12N/mm
• Compliance CMS 83µm/N
• Equivalent volume to the compliance VAS 34.1L
• Mechanical resistance RMS 5.83N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 318mm
• Baffle cutout diameter 295mm
• Mounting depth 89mm
• Volume occupied by the driver 0.82L
• Net weight 6.8kg