Jensen Vintage Ceramic C15N

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.8dB

Thiele & Small parameters

• Resonance frequency (free air) fS 73Hz
• Mechanical quality factor QMS 6.80
• Electrical quality factor QES 1.33
• Total quality factor QTS 1.11

Large signal parameters

• Maximum linear excursion xmax 1mm
• Air volume displaced at xmax VD 76cm³
• Power handling P 50W
• Program power Pmax 100W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.2Ω
• Inductance (1kHz) LE 0.93mH
• VC Diameter 38mm
• Winding height HVC 10mm
• Winding material Copper
• Former material Kapton

Magnet

• Flux density B 1T
• Force factor Bl 10.9N/A
• Motor constant Bl/√RE 4.36N/√W
• Air gap height HAG 8mm
• Weight 0.81kg
• Material Ferrite

Diaphragm

• Effective diameter 310mm
• Effective area SD 755cm²
• Moving mass MMS 54.7g
• Moving mass (without air load) MMD 39.6g
• Material Paper

Suspensions

• Stiffness KMS 11.5N/mm
• Compliance CMS 87µm/N
• Equivalent volume to the compliance VAS 70.3L
• Mechanical resistance RMS 3.69N·s/m
• Surround material Integrated Paper

Dimensions

• Nominal diameter 15″
• 385mm
• Overall diameter 385mm
• Volume occupied by the driver (estimated) 1.8L
• Net weight 4.2kg
• Frame material Pressed Sheet