Jensen Tornado N 12/80 TR Stealth

• Sensitivity (1W, 1m, infinite baffle) SPL1W 98.6dB

Thiele & Small parameters

• Resonance frequency (free air) fS 71.7Hz
• Mechanical quality factor QMS 12.54
• Electrical quality factor QES 0.58
• Total quality factor QTS 0.55

Large signal parameters

• Power handling P 80W
• Program power Pmax 160W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.4Ω
• Inductance (1kHz) LE 0.43mH
• VC Diameter 50mm
• Winding height HVC 10mm
• Winding material Aluminum
• Former material Kapton

Magnet

• Flux density B 1.3T
• Force factor Bl 12.2N/A
• Motor constant Bl/√RE 4.81N/√W
• Air gap height HAG 8mm
• Weight 0.246kg
• Material Neodymium

Diaphragm

• Effective diameter 250mm
• Effective area SD 491cm²
• Moving mass MMS 29.8g
• Moving mass (without air load) MMD 21.9g
• Material Paper

Suspensions

• Stiffness KMS 6.02N/mm
• Compliance CMS 166µm/N
• Equivalent volume to the compliance VAS 56.5L
• Mechanical resistance RMS 1.07N·s/m
• Surround material Integrated Paper

Dimensions

• Nominal diameter 12″
• 307mm
• Overall diameter 307mm
• Volume occupied by the driver (estimated) 0.91L
• Net weight 2.2kg
• Frame material Pressed Sheet