EASTECH FSB525065-6430

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83.7dB

Thiele & Small parameters

• Resonance frequency (free air) fS 75Hz
• Mechanical quality factor QMS 5.19
• Electrical quality factor QES 1.01
• Total quality factor QTS 0.85

Large signal parameters

• Maximum linear excursion xmax 4.3mm
• Air volume displaced at xmax VD 55cm³
• Power handling P 50W
• Program power Pmax 100W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.5Ω
• Inductance (1kHz) LE 1.06mH
• VC Diameter 30.5mm
• Winding height HVC 14.5mm
• Winding material EISVW
• Former material Aluminum

Magnet

• Force factor Bl 7.91N/A
• Motor constant Bl/√RE 4.23N/√W
• Air gap height HAG 6mm
• Material Ferrite

Diaphragm

• Effective diameter 128mm
• Effective area SD 129cm²
• Moving mass MMS 38.1g
• Moving mass (without air load) MMD 37g
• Material Paper

Suspensions

• Stiffness KMS 8.55N/mm
• Compliance CMS 117µm/N
• Equivalent volume to the compliance VAS 2.74L
• Mechanical resistance RMS 3.48N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 6.5″
• 165mm
• Volume occupied by the driver (estimated) 0.5L
• Net weight 1.248kg
• Frame material Steel