Jensen Vintage AlNiCo P10R-F

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

Thiele & Small parameters

• Resonance frequency (free air) fS 87.3Hz
• Mechanical quality factor QMS 18.99
• Electrical quality factor QES 1.98
• Total quality factor QTS 1.79

Large signal parameters

• Maximum linear excursion xmax 1mm
• Air volume displaced at xmax VD 33cm³
• Power handling P 25W
• Program power Pmax 50W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.0Ω
• Inductance (1kHz) LE 0.51mH
• VC Diameter 25mm
• Winding height HVC 8mm
• Winding material Copper
• Former material Kapton

Magnet

• Flux density B 0.96T
• Force factor Bl 5.89N/A
• Motor constant Bl/√RE 2.23N/√W
• Air gap height HAG 6mm
• Weight 0.2kg
• Material Alnico

Diaphragm

• Effective diameter 205mm
• Effective area SD 330cm²
• Moving mass MMS 18g
• Moving mass (without air load) MMD 14.5g
• Material Paper

Suspensions

• Stiffness KMS 5.41N/mm
• Compliance CMS 185µm/N
• Equivalent volume to the compliance VAS 28.5L
• Mechanical resistance RMS 0.52N·s/m
• Surround material Integrated Paper

Dimensions

• Nominal diameter 10″
• 207mm
• Overall diameter 207mm
• Volume occupied by the driver (estimated) 0.56L
• Net weight 1.4kg
• Frame material Pressed Sheet