Ciare PW390

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.6dB

Thiele & Small parameters

• Resonance frequency (free air) fS 37Hz
• Mechanical quality factor QMS 12.37
• Electrical quality factor QES 0.30
• Total quality factor QTS 0.29

Large signal parameters

• Maximum linear excursion xmax 3.8mm
• Air volume displaced at xmax VD 319cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 0.71mH
• VC Diameter 100mm
• Winding material Aluminium
• Former material Kapton

Magnet

• Force factor Bl 18.8N/A
• Motor constant Bl/√RE 8.09N/√W
• Air gap height HAG 10mm
• Material Ferrite

Diaphragm

• Effective diameter 330mm
• Effective area SD 849cm²
• Moving mass MMS 85.2g
• Moving mass (without air load) MMD 67.9g

Suspensions

• Stiffness KMS 4.55N/mm
• Compliance CMS 220µm/N
• Equivalent volume to the compliance VAS 225L
• Mechanical resistance RMS 1.6N·s/m
• Surround material Nomex

Dimensions

• Nominal diameter 15″
• 380mm
• Overall diameter 388mm
• Baffle cutout diameter 350mm
• Overall depth 161mm
• Flange thickness 15mm
• Mounting depth 146mm
• Volume occupied by the driver (estimated) 3.8L
• Frame material Aluminium