Ciare PW257

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.6dB

Thiele & Small parameters

• Resonance frequency (free air) fS 57Hz
• Mechanical quality factor QMS 3.20
• Electrical quality factor QES 0.33
• Total quality factor QTS 0.30

Large signal parameters

• Maximum linear excursion xmax 5.5mm
• Air volume displaced at xmax VD 194cm³
• Power handling P 400W
• Program power Pmax 800W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 0.94mH
• VC Diameter 75mm
• Winding height HVC 16mm
• Former material Aluminum

Magnet

• Force factor Bl 15.9N/A
• Motor constant Bl/√RE 6.95N/√W
• Air gap height HAG 10mm

Diaphragm

• Effective diameter 212mm
• Effective area SD 353cm²
• Moving mass MMS 44.9g
• Moving mass (without air load) MMD 40g

Suspensions

• Stiffness KMS 5.88N/mm
• Compliance CMS 170µm/N
• Equivalent volume to the compliance VAS 31L
• Mechanical resistance RMS 5.03N·s/m
• Surround material Nomex Fabric

Dimensions

• Nominal diameter 10″
• 250mm
• Overall diameter 268mm
• Baffle cutout diameter 235mm
• Overall depth 120mm
• Flange thickness 13mm
• Mounting depth 107mm
• Volume occupied by the driver (estimated) 1.9L
• Net weight 5.0kg
• Frame material Aluminium