SICA 4 L 1 SL

• Sensitivity (1W, 1m, infinite baffle)SPL1W84.7dB
• Frequency response110 - 10000Hz

Thiele & Small parameters

• Resonance frequency (free air)fS108Hz
• Mechanical quality factorQMS3.15
• Electrical quality factorQES0.78
• Total quality factorQTS0.63

Large signal parameters

• Maximum linear excursionxmax2.4mm
• Air volume displaced at xmaxVD11cm³
• Power handlingP60W
• Program powerPmax120W

Voice Coil

• Nominal impedanceZ8Ω
• DC resistanceRE6.0Ω
• Inductance (1kHz)LE0.37mH
• VC Diameter25mm
• Winding heightHVC5mm
• Winding materialCopper
• Former materialEpotex

Magnet

• Flux densityB0.99T
• Force factorBl5.1N/A
• Motor constantBl/√RE2.08N/√W
• Weight0.042kg
• MaterialNeodymium

Diaphragm

• Effective diameter75mm
• Effective areaSD44.2cm²
• Moving massMMS5g
• Moving mass (without air load)MMD4.8g
• MaterialPaper

Suspensions

• StiffnessKMS2.32N/mm
• ComplianceCMS432µm/N
• Equivalent volume to the complianceVAS1.2L
• Mechanical resistanceRMS1.08N·s/m
• Surround materialRubber

Dimensions

• Nominal diameter4″
• 102mm
• Overall diameter100mm
• Baffle cutout diameter90mm
• Overall depth47mm
• Volume occupied by the driver (estimated)0.12L
• Net weight0.2kg
• Frame materialPressed sheet steel