EASTECH FSI511540-4802

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.2dB

Thiele & Small parameters

• Resonance frequency (free air) fS 83Hz
• Mechanical quality factor QMS 5.03
• Electrical quality factor QES 1.47
• Total quality factor QTS 1.14

Large signal parameters

• Maximum linear excursion xmax 3.2mm
• Air volume displaced at xmax VD 18cm³
• Power handling P 5W
• Program power Pmax 10W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.4Ω
• Inductance (1kHz) LE 0.09mH
• VC Diameter 20.3mm
• Winding height HVC 10.4mm
• Winding material PESVW
• Former material Aluminum

Magnet

• Force factor Bl 3.79N/A
• Motor constant Bl/√RE 1.39N/√W
• Air gap height HAG 4mm
• Material Ferrite

Diaphragm

• Effective diameter 84mm
• Effective area SD 54.8cm²
• Moving mass MMS 5.46g
• Moving mass (without air load) MMD 5.2g
• Material Paper

Suspensions

• Stiffness KMS 1.49N/mm
• Compliance CMS 670µm/N
• Equivalent volume to the compliance VAS 2.84L
• Mechanical resistance RMS 0.57N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 4″
• 102mm
• Volume occupied by the driver (estimated) 0.19L
• Net weight 0.503kg
• Frame material Steel