SICA 12 K 4 PL

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.9dB
• Frequency response 50 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 48Hz
• Mechanical quality factor QMS 4.41
• Electrical quality factor QES 0.25
• Total quality factor QTS 0.24

Large signal parameters

• Maximum linear excursion xmax 7mm
• Air volume displaced at xmax VD 372cm³
• Power handling P 1000W
• Program power Pmax 2000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 0.74mH
• VC Diameter 100mm
• Winding height HVC 12mm
• Winding material Copper
• Former material Kapton

Magnet

• Flux density B 1.1T
• Force factor Bl 24.7N/A
• Motor constant Bl/√RE 10.8N/√W
• Weight 0.536kg
• Material Neodymium

Diaphragm

• Effective diameter 260mm
• Effective area SD 531cm²
• Moving mass MMS 93.6g
• Moving mass (without air load) MMD 84.7g
• Material Paper

Suspensions

• Stiffness KMS 8.7N/mm
• Compliance CMS 115µm/N
• Equivalent volume to the compliance VAS 46.3L
• Mechanical resistance RMS 6.4N·s/m
• Surround material Treated Cloth

Dimensions

• Nominal diameter 12″
• 321mm
• 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