Fostex FW168HR

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.3dB
• Frequency response 45 - 10000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 45Hz
• Mechanical quality factor QMS 3.25
• Electrical quality factor QES 0.38
• Total quality factor QTS 0.35

Large signal parameters

• Maximum linear excursion xmax 2.7mm
• Air volume displaced at xmax VD 29cm³
• Power handling P 35W
• Program power Pmax 100W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.1Ω
• Inductance (1kHz) LE 0.07mH
• VC Diameter 35mm

Magnet

• Force factor Bl 8.98N/A
• Motor constant Bl/√RE 3.37N/√W
• Weight 1.09kg
• Material Ferrite

Diaphragm

• Effective diameter 120mm
• Effective area SD 110cm²
• Moving mass MMS 15.7g
• Moving mass (without air load) MMD 14.7g

Suspensions

• Stiffness KMS 1.21N/mm
• Compliance CMS 830µm/N
• Equivalent volume to the compliance VAS 15.1L
• Mechanical resistance RMS 1.37N·s/m

Dimensions

• Nominal diameter 6.5″
• 160mm
• Overall diameter 190mm
• Baffle cutout diameter 151mm
• Overall depth 97mm
• Volume occupied by the driver (estimated) 1.1L
• Net weight 3.64kg