SICA 12 PFS 4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 92.3dB
• Frequency response 35 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 39Hz
• Mechanical quality factor QMS 4.60
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.26

Large signal parameters

• Maximum linear excursion xmax 9mm
• Air volume displaced at xmax VD 478cm³
• Power handling P 1000W
• Program power Pmax 2000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 1.76mH
• VC Diameter 100mm
• Winding height HVC 12mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Flux density B 1.08T
• Force factor Bl 23.9N/A
• Motor constant Bl/√RE 10.5N/√W
• Weight 3.3kg
• Material Ferrite

Diaphragm

• Effective diameter 260mm
• Effective area SD 531cm²
• Moving mass MMS 120g
• Moving mass (without air load) MMD 111g
• Material Paper

Suspensions

• Stiffness KMS 7.19N/mm
• Compliance CMS 139µm/N
• Equivalent volume to the compliance VAS 55.6L
• Mechanical resistance RMS 6.39N·s/m
• Surround material Treated Cloth

Dimensions

• Nominal diameter 12″
• 321mm
• Overall diameter 320mm
• Baffle cutout diameter 284mm
• Overall depth 153mm
• Volume occupied by the driver (estimated) 4.3L
• Net weight 11.5kg
• Frame material Aluminium Die-Cast