Jensen Smooth BS 15N/350A

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.1dB

Thiele & Small parameters

• Resonance frequency (free air) fS 45Hz
• Mechanical quality factor QMS 7.64
• Electrical quality factor QES 0.49
• Total quality factor QTS 0.46

Large signal parameters

• Maximum linear excursion xmax 5.5mm
• Maximum excursion before damage xlim 11.5mm
• Air volume displaced at xmax VD 470cm³
• Power handling P 350W
• Program power Pmax 700W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.1Ω
• Inductance (1kHz) LE 0.78mH
• VC Diameter 75mm
• Winding height HVC 21mm
• Winding material Aluminum
• Former material Glass Fiber

Magnet

• Flux density B 1.17T
• Force factor Bl 15.2N/A
• Motor constant Bl/√RE 6.74N/√W
• Air gap height HAG 10mm
• Weight 0.36kg
• Material Neodymium

Diaphragm

• Effective diameter 330mm
• Effective area SD 855cm²
• Moving mass MMS 80.9g
• Moving mass (without air load) MMD 63.5g
• Material Paper

Suspensions

• Stiffness KMS 6.33N/mm
• Compliance CMS 158µm/N
• Equivalent volume to the compliance VAS 163L
• Mechanical resistance RMS 2.99N·s/m
• Surround material Treated Cloth

Dimensions

• Nominal diameter 15″
• 388mm
• Overall diameter 388mm
• Volume occupied by the driver (estimated) 1.7L
• Net weight 4.0kg
• Frame material Aluminium Die-Cast