PUNKTKILDE FSB224040-0802

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83.3dB

Thiele & Small parameters

• Resonance frequency (free air) fS 69.9Hz
• Mechanical quality factor QMS 9.54
• Electrical quality factor QES 0.88
• Total quality factor QTS 0.81

Large signal parameters

• Maximum linear excursion xmax 5mm
• Maximum excursion before damage xlim 14mm
• Air volume displaced at xmax VD 28cm³
• Power handling P 15W
• Program power Pmax 30W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.5Ω
• Inductance (1kHz) LE 0.43mH
• VC Diameter 25.4mm
• Winding height HVC 15mm
• Winding material Copper Clad Aluminium
• Former material Glass-fiber

Magnet

• Force factor Bl 5.12N/A
• Motor constant Bl/√RE 1.87N/√W
• Air gap height HAG 5mm
• Material Ferrite

Diaphragm

• Effective diameter 85mm
• Effective area SD 56.8cm²
• Moving mass MMS 7g
• Moving mass (without air load) MMD 6.7g
• Material Kevlar

Suspensions

• Stiffness KMS 1.35N/mm
• Compliance CMS 741µm/N
• Equivalent volume to the compliance VAS 3.37L
• Mechanical resistance RMS 0.322N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 4″
• 102mm
• Volume occupied by the driver (estimated) 0.29L
• Net weight 0.755kg
• Frame material Aluminium Die-cast