FaitalPRO 4FE42 4Ω

• Sensitivity (1W, 1m, infinite baffle) SPL1W 90.4dB
• Frequency response 100 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 110Hz
• Mechanical quality factor QMS 6.60
• Electrical quality factor QES 0.40
• Total quality factor QTS 0.38

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 4Ω
• DC resistance RE 3.5Ω
• Inductance (1kHz) LE 0.05mH
• VC Diameter 25mm
• Winding height HVC 7mm
• Winding material Aluminium
• Former material Kapton

Magnet

• Flux density B 1.4T
• Force factor Bl 5.4N/A
• Motor constant Bl/√RE 2.89N/√W
• Air gap height HAG 4mm
• Material Neodymium Ring

Diaphragm

• Effective diameter 81mm
• Effective area SD 50.9cm²
• Moving mass MMS 4.3g
• Moving mass (without air load) MMD 4g

Suspensions

• Stiffness KMS 2.04N/mm
• Compliance CMS 490µm/N
• Equivalent volume to the compliance VAS 1.8L
• Mechanical resistance RMS 0.5N·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