Fostex PW80K

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.2dB
• Frequency response 130 - 23000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 130Hz
• Mechanical quality factor QMS 5.48
• Electrical quality factor QES 1.41
• Total quality factor QTS 1.08

Large signal parameters

• Maximum linear excursion xmax 2.2mm
• Air volume displaced at xmax VD 6.2cm³
• Power handling P 8W
• Program power Pmax 24W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.4Ω
• Inductance (1kHz) LE 0.29mH
• VC Diameter 20mm

Magnet

• Force factor Bl 3.16N/A
• Motor constant Bl/√RE 1.16N/√W
• Weight 0.092kg
• Material Ferrite

Diaphragm

• Effective diameter 60mm
• Effective area SD 28cm²
• Moving mass MMS 2.3g
• Moving mass (without air load) MMD 2.2g

Suspensions

• Stiffness KMS 1.48N/mm
• Compliance CMS 674µm/N
• Equivalent volume to the compliance VAS 0.882L
• Mechanical resistance RMS 0.34N·s/m

Dimensions

• Nominal diameter 3.2″
• 80mm
• Overall diameter 83mm
• Baffle cutout diameter 79mm
• Overall depth 40mm
• Net weight 0.224kg