Jensen Vintage AlNiCo P15N

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.2dB

Thiele & Small parameters

• Resonance frequency (free air) fS 77.9Hz
• Mechanical quality factor QMS 6.80
• Electrical quality factor QES 1.49
• Total quality factor QTS 1.22

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 0.9mH
• VC Diameter 38mm
• Winding height HVC 10mm
• Winding material Copper
• Former material Kapton

Magnet

• Flux density B 1.26T
• Force factor Bl 10.5N/A
• Motor constant Bl/√RE 4.21N/√W
• Air gap height HAG 8mm
• Weight 0.826kg
• Material Alnico

Diaphragm

• Effective diameter 310mm
• Effective area SD 755cm²
• Moving mass MMS 53.9g
• Moving mass (without air load) MMD 38.8g
• Material Paper

Suspensions

• Stiffness KMS 12.8N/mm
• Compliance CMS 78µm/N
• Equivalent volume to the compliance VAS 62.6L
• Mechanical resistance RMS 3.88N·s/m
• Surround material Integrated Paper

Dimensions

• Nominal diameter 15″
• 385mm
• Overall diameter 385mm
• Volume occupied by the driver (estimated) 1.7L
• Net weight 3.9kg
• Frame material Pressed Sheet