Fostex FE83NV2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.1dB
• Frequency response 150 - 22000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 150Hz
• Mechanical quality factor QMS 4.21
• Electrical quality factor QES 0.96
• Total quality factor QTS 0.78

Large signal parameters

• Power handling P 5W
• Program power Pmax 15W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.1Ω
• Inductance (1kHz) LE 0.1mH
• VC Diameter 16mm

Magnet

• Force factor Bl 3.2N/A
• Motor constant Bl/√RE 1.2N/√W

Diaphragm

• Effective diameter 60mm
• Effective area SD 28.2cm²
• Moving mass MMS 1.4g
• Moving mass (without air load) MMD 1.3g

Suspensions

• Stiffness KMS 1.25N/mm
• Compliance CMS 800µm/N
• Equivalent volume to the compliance VAS 0.9L
• Mechanical resistance RMS 0.31N·s/m

Dimensions

• Nominal diameter 3″
• 80mm
• Overall size 83 x 83mm
• Baffle cutout diameter 73mm
• Volume occupied by the driver (estimated) 0.14L
• Net weight 0.371kg