EASTECH FSB425065-B801

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.2dB

Thiele & Small parameters

• Resonance frequency (free air) fS 72.6Hz
• Mechanical quality factor QMS 6.54
• Electrical quality factor QES 0.64
• Total quality factor QTS 0.58

Large signal parameters

• Maximum linear excursion xmax 2.8mm
• Air volume displaced at xmax VD 37cm³
• Power handling P 50W
• Program power Pmax 100W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.3Ω
• Inductance (1kHz) LE 0.991mH
• VC Diameter 25.4mm
• Winding height HVC 10.6mm
• Winding material PESVW
• Former material Kapton

Magnet

• Force factor Bl 9.24N/A
• Motor constant Bl/√RE 3.42N/√W
• Air gap height HAG 5mm
• Material Ferrite

Diaphragm

• Effective diameter 130mm
• Effective area SD 133cm²
• Moving mass MMS 16.4g
• Moving mass (without air load) MMD 15.3g
• Material PP

Suspensions

• Stiffness KMS 3.41N/mm
• Compliance CMS 293µm/N
• Equivalent volume to the compliance VAS 7.3L
• Mechanical resistance RMS 1.14N·s/m
• Surround material Foam

Dimensions

• Nominal diameter 6.5″
• 165mm
• Volume occupied by the driver (estimated) 0.4L
• Net weight 1.02kg
• Frame material Steel