EASTECH FSI521535-3806

• Sensitivity (1W, 1m, infinite baffle) SPL1W 82.2dB

Thiele & Small parameters

• Resonance frequency (free air) fS 106Hz
• Mechanical quality factor QMS 7.36
• Electrical quality factor QES 1.09
• Total quality factor QTS 0.95

Large signal parameters

• Maximum linear excursion xmax 2.9mm
• Air volume displaced at xmax VD 12cm³
• Power handling P 5W
• Program power Pmax 15W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.7Ω
• Inductance (1kHz) LE 0.73mH
• VC Diameter 20.3mm
• Winding height HVC 9.8mm
• Winding material PESVW
• Former material Aluminum

Magnet

• Force factor Bl 5.83N/A
• Motor constant Bl/√RE 2.1N/√W
• Air gap height HAG 4mm
• Material Ferrite

Diaphragm

• Effective diameter 72mm
• Effective area SD 40.7cm²
• Moving mass MMS 7.22g
• Moving mass (without air load) MMD 7g
• Material Paper

Suspensions

• Stiffness KMS 3.23N/mm
• Compliance CMS 310µm/N
• Equivalent volume to the compliance VAS 0.74L
• Mechanical resistance RMS 0.65N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 3.5″
• 89mm
• Volume occupied by the driver (estimated) 0.17L
• Net weight 0.455kg
• Frame material Steel