EASTECH FSB521530-3412

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.8dB

Thiele & Small parameters

• Resonance frequency (free air) fS 181Hz
• Mechanical quality factor QMS 9.22
• Electrical quality factor QES 1.78
• Total quality factor QTS 1.49

Large signal parameters

• Maximum linear excursion xmax 1mm
• Air volume displaced at xmax VD 3cm³
• Power handling P 15W
• Program power Pmax 30W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.8Ω
• Inductance (1kHz) LE 0.128mH
• VC Diameter 16.4mm
• Winding height HVC 5mm
• Winding material PESVW
• Former material Kapton

Magnet

• Force factor Bl 2.51N/A
• Motor constant Bl/√RE 1.28N/√W
• Air gap height HAG 3mm
• Material Ferrite

Diaphragm

• Effective diameter 62mm
• Effective area SD 30.2cm²
• Moving mass MMS 2.59g
• Moving mass (without air load) MMD 2.5g
• Material Paper

Suspensions

• Stiffness KMS 3.34N/mm
• Compliance CMS 299µm/N
• Equivalent volume to the compliance VAS 0.385L
• Mechanical resistance RMS 0.319N·s/m
• Surround material Cloth

Dimensions

• Nominal diameter 3″
• 76mm
• Net weight 0.212kg
• Frame material Steel