JL Audio M8IB5-SG-TB

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.9dB

Thiele & Small parameters

• Resonance frequency (free air) fS 53.4Hz
• Mechanical quality factor QMS 11.83
• Electrical quality factor QES 0.83
• Total quality factor QTS 0.78

Large signal parameters

• Maximum linear excursion xmax 14mm
• Air volume displaced at xmax VD 318cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.0Ω
• Inductance (1kHz, estimated) LE 0.77mH

Magnet

• Force factor Bl 7N/A
• Motor constant Bl/√RE 4.07N/√W
• Diameter 140mm

Diaphragm

• Effective diameter 170mm
• Effective area SD 227cm²
• Moving mass MMS 40.6g
• Moving mass (without air load) MMD 38g

Suspensions

• Stiffness KMS 4.57N/mm
• Compliance CMS 219µm/N
• Equivalent volume to the compliance VAS 16L
• Mechanical resistance RMS 1.15N·s/m

Dimensions

• Nominal diameter 8″
• 200mm
• Overall diameter 224mm
• Baffle cutout diameter 187mm
• Overall depth 169mm
• Flange thickness 37mm
• Mounting depth 132mm
• Volume occupied by the driver 0.91L
• Net weight 3.094kg