JL Audio 12W1v2-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.8dB

Thiele & Small parameters

• Resonance frequency (free air) fS 23.7Hz
• Mechanical quality factor QMS 6.47
• Electrical quality factor QES 0.44
• Total quality factor QTS 0.41

Large signal parameters

• Maximum linear excursion xmax 10mm
• Air volume displaced at xmax VD 525cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 4.1Ω
• Inductance (1kHz, estimated) LE 1.29mH

Magnet

• Force factor Bl 15.2N/A
• Motor constant Bl/√RE 7.51N/√W
• Diameter 121mm

Diaphragm

• Effective diameter 259mm
• Effective area SD 525cm²
• Moving mass MMS 167g
• Moving mass (without air load) MMD 158g

Suspensions

• Stiffness KMS 3.69N/mm
• Compliance CMS 271µm/N
• Equivalent volume to the compliance VAS 106L
• Mechanical resistance RMS 3.84N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 318mm
• Baffle cutout diameter 281mm
• Mounting depth 130mm
• Volume occupied by the driver 0.99L
• Net weight 3.9kg