SICA 15 S 4 PL

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.4dB
• Frequency response 35 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 38Hz
• Mechanical quality factor QMS 14.50
• Electrical quality factor QES 0.29
• Total quality factor QTS 0.28

Large signal parameters

• Maximum linear excursion xmax 8.5mm
• Air volume displaced at xmax VD 727cm³
• Power handling P 1200W
• Program power Pmax 2400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.1Ω
• Inductance (1kHz) LE 1.38mH
• VC Diameter 100mm
• Winding height HVC 12mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Flux density B 1.21T
• Force factor Bl 23.8N/A
• Motor constant Bl/√RE 10.6N/√W
• Weight 0.536kg
• Material Neodymium

Diaphragm

• Effective diameter 330mm
• Effective area SD 855cm²
• Moving mass MMS 134g
• Moving mass (without air load) MMD 117g
• Material Paper

Suspensions

• Stiffness KMS 7.63N/mm
• Compliance CMS 131µm/N
• Equivalent volume to the compliance VAS 136L
• Mechanical resistance RMS 2.21N·s/m
• Surround material Treated Cloth

Dimensions

• Nominal diameter 15″
• 388mm
• Overall diameter 388mm
• Baffle cutout diameter 355mm
• Overall depth 177mm
• Volume occupied by the driver (estimated) 3.9L
• Net weight 7.0kg
• Frame material Aluminium Die-Cast