SICA 6,5 C 1,5 CP

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.7dB
• Frequency response 55 - 18000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 50.8Hz
• Mechanical quality factor QMS 6.09
• Electrical quality factor QES 0.42
• Total quality factor QTS 0.39

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Air volume displaced at xmax VD 55cm³
• Power handling P 120W
• Program power Pmax 240W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.1Ω
• Inductance (1kHz) LE 0.44mH
• VC Diameter 38mm
• Winding height HVC 5mm
• Winding material Copper
• Former material Kapton

Magnet

• Force factor Bl 7.21N/A
• Motor constant Bl/√RE 3.19N/√W
• Weight 0.515kg
• Material Ferrite

Diaphragm

• Effective diameter 125mm
• Effective area SD 123cm²
• Moving mass MMS 13.1g
• Moving mass (without air load) MMD 12g
• Material Paper

Suspensions

• Stiffness KMS 1.34N/mm
• Compliance CMS 745µm/N
• Equivalent volume to the compliance VAS 15.9L
• Mechanical resistance RMS 0.69N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 6.5″
• 174mm
• Overall diameter 175mm
• Baffle cutout diameter 143mm
• Overall depth 80mm
• Volume occupied by the driver (estimated) 0.56L
• Net weight 1.7kg
• Frame material Aluminium Die-Cast