SICA 12 PNS 4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 92.2dB
• Frequency response 40 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 41.7Hz
• Mechanical quality factor QMS 12.63
• Electrical quality factor QES 0.32
• Total quality factor QTS 0.31

Large signal parameters

• Maximum linear excursion xmax 9.5mm
• Air volume displaced at xmax VD 504cm³
• Power handling P 1000W
• Program power Pmax 2000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 1.3mH
• VC Diameter 100mm
• Winding height HVC 12mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Flux density B 1.21T
• Force factor Bl 22.3N/A
• Motor constant Bl/√RE 9.78N/√W
• Weight 0.536kg
• Material Neodymium

Diaphragm

• Effective diameter 260mm
• Effective area SD 531cm²
• Moving mass MMS 116g
• Moving mass (without air load) MMD 107g
• Material Paper

Suspensions

• Stiffness KMS 7.94N/mm
• Compliance CMS 126µm/N
• Equivalent volume to the compliance VAS 50.2L
• Mechanical resistance RMS 2.4N·s/m
• Surround material Treated Cloth

Dimensions

• Nominal diameter 12″
• 320mm
• Overall diameter 320mm
• Baffle cutout diameter 284mm
• Overall depth 155mm
• Volume occupied by the driver (estimated) 3L
• Net weight 6.6kg
• Frame material Aluminium Die-Cast