EASTECH FSB528065-6406

• Sensitivity (1W, 1m, infinite baffle) SPL1W 81.5dB

Thiele & Small parameters

• Resonance frequency (free air) fS 52Hz
• Mechanical quality factor QMS 8.47
• Electrical quality factor QES 1.01
• Total quality factor QTS 0.90

Large signal parameters

• Maximum linear excursion xmax 7.4mm
• Air volume displaced at xmax VD 95cm³
• Power handling P 80W
• Program power Pmax 100W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.3Ω
• Inductance (1kHz) LE 1.19mH
• VC Diameter 35.5mm
• Winding height HVC 20.7mm
• Winding material PESVW
• Former material Aluminum

Magnet

• Force factor Bl 7.02N/A
• Motor constant Bl/√RE 3.86N/√W
• Air gap height HAG 6mm
• Material Ferrite

Diaphragm

• Effective diameter 128mm
• Effective area SD 129cm²
• Moving mass MMS 45.7g
• Moving mass (without air load) MMD 44.6g
• Material Paper

Suspensions

• Stiffness KMS 5N/mm
• Compliance CMS 200µm/N
• Equivalent volume to the compliance VAS 4.73L
• Mechanical resistance RMS 1.78N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 6.5″
• 165mm
• Volume occupied by the driver (estimated) 0.5L
• Net weight 1.26kg
• Frame material Steel