Jensen Mod 12-50

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96dB

Thiele & Small parameters

• Resonance frequency (free air) fS 83Hz
• Mechanical quality factor QMS 7.72
• Electrical quality factor QES 2.07
• Total quality factor QTS 1.63

Large signal parameters

• Maximum linear excursion xmax 1.5mm
• Air volume displaced at xmax VD 74cm³
• Power handling P 50W
• Program power Pmax 100W

Voice Coil

• Nominal impedance Z 16Ω
• DC resistance RE 12.5Ω
• Inductance (1kHz) LE 1mH
• VC Diameter 32mm
• Winding material Copper
• Former material Epotex

Magnet

• Flux density B 1.1T
• Force factor Bl 9.63N/A
• Motor constant Bl/√RE 2.72N/√W
• Weight 0.426kg
• Material Ferrite

Diaphragm

• Effective diameter 250mm
• Effective area SD 491cm²
• Moving mass MMS 29.8g
• Moving mass (without air load) MMD 22g
• Material Paper

Suspensions

• Stiffness KMS 8N/mm
• Compliance CMS 125µm/N
• Equivalent volume to the compliance VAS 42.3L
• Mechanical resistance RMS 2.01N·s/m
• Surround material Integrated Paper

Dimensions

• Nominal diameter 12″
• 306mm
• Overall diameter 306mm
• Volume occupied by the driver (estimated) 0.75L
• Net weight 1.84kg
• Frame material Pressed Sheet