FaitalPRO 4FE42 8Ω

• Sensitivity (1W, 1m, infinite baffle) SPL1W 90.1dB
• Frequency response 100 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 110Hz
• Mechanical quality factor QMS 8.00
• Electrical quality factor QES 0.50
• Total quality factor QTS 0.47

Large signal parameters

• Maximum linear excursion xmax 2.8mm
• Maximum excursion before damage xlim 5.1mm
• Air volume displaced at xmax VD 14cm³
• Power handling P 40W
• Program power Pmax 80W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 0.07mH
• VC Diameter 25mm
• Winding height HVC 7mm
• Winding material Aluminium
• Former material Kapton

Magnet

• Flux density B 1.4T
• Force factor Bl 6N/A
• Motor constant Bl/√RE 2.58N/√W
• Air gap height HAG 4mm
• Material Neodymium Ring

Diaphragm

• Effective diameter 81mm
• Effective area SD 50.9cm²
• Moving mass MMS 4g
• Moving mass (without air load) MMD 3.7g

Suspensions

• Stiffness KMS 1.92N/mm
• Compliance CMS 520µm/N
• Equivalent volume to the compliance VAS 1.9L
• Mechanical resistance RMS 0.3N·s/m

Dimensions

• Nominal diameter 4″
• 100mm
• Overall size 101 x 130mm
• Baffle cutout diameter 92mm
• Overall depth 54mm
• Flange thickness 7mm
• Mounting depth 47mm
• Volume occupied by the driver 0.11L
• Net weight 0.39kg
• Frame material Steel