JL Audio C7-350cm

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.5dB

Thiele & Small parameters

• Resonance frequency (free air) fS 157Hz
• Mechanical quality factor QMS 6.45
• Electrical quality factor QES 0.59
• Total quality factor QTS 0.54

Large signal parameters

• Maximum linear excursion xmax 1mm
• Air volume displaced at xmax VD 3.4cm³
• Power handling P 100W
• Program power Pmax 200W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz, estimated) LE 0.18mH

Magnet

• Force factor Bl 4.66N/A
• Motor constant Bl/√RE 2.59N/√W
• Diameter 60mm

Diaphragm

• Effective diameter 66mm
• Effective area SD 34.3cm²
• Moving mass MMS 4.01g
• Moving mass (without air load) MMD 3.8g

Suspensions

• Stiffness KMS 3.89N/mm
• Compliance CMS 257µm/N
• Equivalent volume to the compliance VAS 0.43L
• Mechanical resistance RMS 0.61N·s/m

Dimensions

• Nominal diameter 3.5″
• 90mm
• Overall diameter 100mm
• Baffle cutout diameter 73mm
• Overall depth 52mm
• Flange thickness 15mm
• Mounting depth 37mm
• Volume occupied by the driver (estimated) 0.14L