SICA 4 L1 1 SL

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.5dB
• Frequency response 120 - 10000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 120Hz
• Mechanical quality factor QMS 2.15
• Electrical quality factor QES 0.44
• Total quality factor QTS 0.36

Large signal parameters

• Maximum linear excursion xmax 2.5mm
• Air volume displaced at xmax VD 11cm³
• Power handling P 70W
• Program power Pmax 140W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.5Ω
• Inductance (1kHz) LE 0.15mH
• VC Diameter 25mm
• Winding height HVC 5mm
• Winding material Aluminium
• Former material Aluminium

Magnet

• Flux density B 1.39T
• Force factor Bl 6.16N/A
• Motor constant Bl/√RE 2.63N/√W
• Weight 0.092kg
• Material Neodymium

Diaphragm

• Effective diameter 75mm
• Effective area SD 44.2cm²
• Moving mass MMS 4g
• Moving mass (without air load) MMD 3.8g
• Material Paper

Suspensions

• Stiffness KMS 2.27N/mm
• Compliance CMS 440µm/N
• Equivalent volume to the compliance VAS 1.2L
• Mechanical resistance RMS 1.4N·s/m
• Surround material Treated Cloth

Dimensions

• Nominal diameter 4″
• 104 x 104mm
• Overall size 104 x 104mm
• Baffle cutout diameter 90mm
• Overall depth 54mm
• Volume occupied by the driver (estimated) 0.12L
• Net weight 0.4kg
• Frame material Pressed sheet steel