SICA 12 C 2,5 CP

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.5dB
• Frequency response 55 - 3500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 50.5Hz
• Mechanical quality factor QMS 8.85
• Electrical quality factor QES 0.31
• Total quality factor QTS 0.30

Large signal parameters

• Maximum linear excursion xmax 5mm
• Air volume displaced at xmax VD 266cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.2Ω
• Inductance (1kHz) LE 1.12mH
• VC Diameter 65mm
• Winding height HVC 8mm
• Winding material Copper
• Former material Kapton

Magnet

• Flux density B 1.3T
• Force factor Bl 17.3N/A
• Motor constant Bl/√RE 6.95N/√W
• Weight 1.45kg
• Material Ferrite

Diaphragm

• Effective diameter 260mm
• Effective area SD 531cm²
• Moving mass MMS 47g
• Moving mass (without air load) MMD 38.1g
• Material Paper

Suspensions

• Stiffness KMS 4.74N/mm
• Compliance CMS 211µm/N
• Equivalent volume to the compliance VAS 84.5L
• Mechanical resistance RMS 1.69N·s/m
• Surround material Treated Cloth

Dimensions

• Nominal diameter 12″
• 321mm
• Overall diameter 320mm
• Baffle cutout diameter 284mm
• Overall depth 132mm
• Volume occupied by the driver (estimated) 2.3L
• Net weight 5.0kg
• Frame material Aluminium Die-Cast