SICA 4 E 1 CS

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88dB
• Frequency response 120 - 10000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 118Hz
• Mechanical quality factor QMS 1.85
• Electrical quality factor QES 0.49
• Total quality factor QTS 0.39

Large signal parameters

• Maximum linear excursion xmax 2.2mm
• Air volume displaced at xmax VD 9.7cm³
• Power handling P 70W
• Program power Pmax 140W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 0.14mH
• VC Diameter 25mm
• Winding height HVC 6mm
• Winding material Aluminium
• Former material Aluminium

Magnet

• Flux density B 1.1T
• Force factor Bl 5.76N/A
• Motor constant Bl/√RE 2.43N/√W
• Weight 0.38kg
• Material Ferrite

Diaphragm

• Effective diameter 75mm
• Effective area SD 44.2cm²
• Moving mass MMS 3.9g
• Moving mass (without air load) MMD 3.7g
• Material Paper

Suspensions

• Stiffness KMS 2.15N/mm
• Compliance CMS 466µm/N
• Equivalent volume to the compliance VAS 1.3L
• Mechanical resistance RMS 1.56N·s/m
• Surround material Treated Cloth

Dimensions

• Nominal diameter 4″
• 102 x 104mm
• Overall size 104 x 104mm
• Baffle cutout diameter 90mm
• Overall depth 58mm
• Volume occupied by the driver (estimated) 0.23L
• Net weight 1.0kg
• Frame material Pressed sheet steel