SICA 12 SR 3 CP

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.8dB
• Frequency response 35 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 37Hz
• Mechanical quality factor QMS 2.96
• Electrical quality factor QES 0.46
• Total quality factor QTS 0.40

Large signal parameters

• Maximum linear excursion xmax 8mm
• Air volume displaced at xmax VD 393cm³
• Power handling P 450W
• Program power Pmax 900W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 1.29mH
• VC Diameter 75mm
• Winding height HVC 10mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Flux density B 1T
• Force factor Bl 16.6N/A
• Motor constant Bl/√RE 7.27N/√W
• Weight 1.79kg
• Material Ferrite

Diaphragm

• Effective diameter 250mm
• Effective area SD 491cm²
• Moving mass MMS 104g
• Moving mass (without air load) MMD 95.9g
• Material Paper

Suspensions

• Stiffness KMS 5.62N/mm
• Compliance CMS 178µm/N
• Equivalent volume to the compliance VAS 60.9L
• Mechanical resistance RMS 8.17N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 12″
• 321mm
• Overall diameter 320mm
• Baffle cutout diameter 284mm
• Overall depth 141mm
• Volume occupied by the driver (estimated) 2.9L
• Net weight 6.7kg
• Frame material Aluminium Die-Cast