Fostex FW168HS

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.6dB
• Frequency response 42 - 10000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 42Hz
• Mechanical quality factor QMS 13.80
• Electrical quality factor QES 0.35
• Total quality factor QTS 0.34

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 53cm³
• Power handling P 35W
• Program power Pmax 100W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.9Ω
• Inductance (1kHz) LE 0.47mH
• VC Diameter 50mm

Magnet

• Force factor Bl 10.6N/A
• Motor constant Bl/√RE 4.35N/√W
• Weight 1.09kg
• Material Ferrite

Diaphragm

• Effective diameter 130mm
• Effective area SD 133cm²
• Moving mass MMS 25g
• Moving mass (without air load) MMD 23.8g

Suspensions

• Stiffness KMS 1.67N/mm
• Compliance CMS 600µm/N
• Equivalent volume to the compliance VAS 14.3L
• Mechanical resistance RMS 0.48N·s/m

Dimensions

• Nominal diameter 6.5″
• 160mm
• Overall diameter 190mm
• Baffle cutout diameter 151mm
• Overall depth 100mm
• Volume occupied by the driver (estimated) 1.2L
• Net weight 3.87kg