SICA 4 L 1 SL

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.7dB
• Frequency response 110 - 10000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 108Hz
• Mechanical quality factor QMS 3.15
• Electrical quality factor QES 0.78
• Total quality factor QTS 0.63

Large signal parameters

• Maximum linear excursion xmax 2.4mm
• Air volume displaced at xmax VD 11cm³
• Power handling P 60W
• Program power Pmax 120W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.0Ω
• Inductance (1kHz) LE 0.37mH
• VC Diameter 25mm
• Winding height HVC 5mm
• Winding material Copper
• Former material Epotex

Magnet

• Flux density B 0.99T
• Force factor Bl 5.1N/A
• Motor constant Bl/√RE 2.08N/√W
• Weight 0.042kg
• Material Neodymium

Diaphragm

• Effective diameter 75mm
• Effective area SD 44.2cm²
• Moving mass MMS 5g
• Moving mass (without air load) MMD 4.8g
• Material Paper

Suspensions

• Stiffness KMS 2.32N/mm
• Compliance CMS 432µm/N
• Equivalent volume to the compliance VAS 1.2L
• Mechanical resistance RMS 1.08N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 4″
• 102mm
• Overall diameter 100mm
• Baffle cutout diameter 90mm
• Overall depth 47mm
• Volume occupied by the driver (estimated) 0.12L
• Net weight 0.2kg
• Frame material Pressed sheet steel