Jensen Vintage Ceramic C15K

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.2dB

Thiele & Small parameters

• Resonance frequency (free air) fS 71Hz
• Mechanical quality factor QMS 10.40
• Electrical quality factor QES 0.81
• Total quality factor QTS 0.75

Large signal parameters

• Maximum linear excursion xmax 1mm
• Air volume displaced at xmax VD 76cm³
• Power handling P 100W
• Program power Pmax 200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.9Ω
• Inductance (1kHz) LE 0.92mH
• VC Diameter 50mm
• Winding height HVC 10mm
• Winding material Copper
• Former material Kapton

Magnet

• Flux density B 1.15T
• Force factor Bl 14.2N/A
• Motor constant Bl/√RE 5.42N/√W
• Air gap height HAG 8mm
• Weight 1.45kg
• Material Ferrite

Diaphragm

• Effective diameter 310mm
• Effective area SD 755cm²
• Moving mass MMS 53.5g
• Moving mass (without air load) MMD 38.4g
• Material Paper

Suspensions

• Stiffness KMS 10.6N/mm
• Compliance CMS 94µm/N
• Equivalent volume to the compliance VAS 75.8L
• Mechanical resistance RMS 2.29N·s/m
• Surround material Integrated Paper

Dimensions

• Nominal diameter 15″
• 385mm
• Overall diameter 385mm
• Volume occupied by the driver (estimated) 2.3L
• Net weight 5.3kg
• Frame material Pressed Sheet