SICA 4 D 0,8 CS

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.9dB
• Frequency response 140 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 140Hz
• Mechanical quality factor QMS 4.20
• Electrical quality factor QES 1.18
• Total quality factor QTS 0.92

Large signal parameters

• Maximum linear excursion xmax 1.3mm
• Air volume displaced at xmax VD 5.8cm³
• Power handling P 35W
• Program power Pmax 70W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.0Ω
• Inductance (1kHz) LE 0.14mH
• VC Diameter 20mm
• Winding height HVC 4mm
• Winding material Copper
• Former material Epotex

Magnet

• Flux density B 1.1T
• Force factor Bl 2.65N/A
• Motor constant Bl/√RE 1.53N/√W
• Weight 0.154kg
• Material Ferrite

Diaphragm

• Effective diameter 75mm
• Effective area SD 44.2cm²
• Moving mass MMS 3.1g
• Moving mass (without air load) MMD 2.9g
• Material Paper

Suspensions

• Stiffness KMS 2.4N/mm
• Compliance CMS 416µm/N
• Equivalent volume to the compliance VAS 1.2L
• Mechanical resistance RMS 0.65N·s/m
• Surround material Treated Cloth

Dimensions

• Nominal diameter 4″
• 102mm
• Overall diameter 100mm
• Baffle cutout diameter 90mm
• Overall depth 50mm
• Volume occupied by the driver (estimated) 0.11L
• Net weight 0.4kg
• Frame material Pressed Sheet Steel