Ciare PW251

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.8dB

Thiele & Small parameters

• Resonance frequency (free air) fS 56Hz
• Mechanical quality factor QMS 2.14
• Electrical quality factor QES 0.38
• Total quality factor QTS 0.32

Large signal parameters

• Maximum linear excursion xmax 1.4mm
• Air volume displaced at xmax VD 49cm³
• Power handling P 150W
• Program power Pmax 300W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.2Ω
• Inductance (1kHz) LE 0.6mH
• VC Diameter 50mm
• Former material Aluminium

Magnet

• Force factor Bl 13.5N/A
• Motor constant Bl/√RE 5.43N/√W
• Air gap height HAG 8mm
• Material Ferrite

Diaphragm

• Effective diameter 215mm
• Effective area SD 362cm²
• Moving mass MMS 31.8g
• Moving mass (without air load) MMD 26.8g

Suspensions

• Stiffness KMS 3.97N/mm
• Compliance CMS 252µm/N
• Equivalent volume to the compliance VAS 46.7L
• Mechanical resistance RMS 5.23N·s/m
• Surround material Nomex

Dimensions

• Nominal diameter 10″
• 250mm
• Overall diameter 268mm
• Baffle cutout diameter 238mm
• Overall depth 96mm
• Flange thickness 13mm
• Mounting depth 83mm
• Volume occupied by the driver (estimated) 1.2L
• Frame material Aluminium