Fostex FE206NV2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.5dB
• Frequency response 45 - 18000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 44.7Hz
• Mechanical quality factor QMS 7.25
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.26

Large signal parameters

• Power handling P 30W
• Program power Pmax 90W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.2Ω
• Inductance (1kHz) LE 0.1mH
• VC Diameter 35mm

Magnet

• Force factor Bl 10.7N/A
• Motor constant Bl/√RE 3.99N/√W

Diaphragm

• Effective diameter 162mm
• Effective area SD 210cm²
• Moving mass MMS 15.2g
• Moving mass (without air load) MMD 12.9g

Suspensions

• Stiffness KMS 1.25N/mm
• Compliance CMS 800µm/N
• Equivalent volume to the compliance VAS 50.2L
• Mechanical resistance RMS 0.59N·s/m

Dimensions

• Nominal diameter 8″
• 200mm
• Overall size 208 x 208mm
• Baffle cutout diameter 185mm
• Volume occupied by the driver (estimated) 1.4L
• Net weight 3.2kg