Ciare CH250

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.2dB
• Frequency response 40 - 18000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 65Hz
• Mechanical quality factor QMS 12.80
• Electrical quality factor QES 1.53
• Total quality factor QTS 1.36

Large signal parameters

• Maximum linear excursion xmax 2mm
• Air volume displaced at xmax VD 68cm³
• Power handling P 50W
• Program power Pmax 150W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.4Ω
• Inductance (1kHz) LE 0.24mH
• VC Diameter 32mm
• Winding height HVC 7mm

Magnet

• Force factor Bl 4.1N/A
• Motor constant Bl/√RE 2.22N/√W
• Air gap height HAG 6mm
• Material Ferrite

Diaphragm

• Effective diameter 208mm
• Effective area SD 340cm²
• Moving mass MMS 18.6g
• Moving mass (without air load) MMD 13.9g

Suspensions

• Stiffness KMS 3.13N/mm
• Compliance CMS 320µm/N
• Equivalent volume to the compliance VAS 52L
• Mechanical resistance RMS 0.59N·s/m
• Surround material Paper

Dimensions

• Nominal diameter 10″
• 250mm
• Overall diameter 265mm
• Baffle cutout diameter 238mm
• Overall depth 105mm
• Flange thickness 9mm
• Mounting depth 96mm
• Volume occupied by the driver (estimated) 0.75L
• Net weight 1.35kg
• Frame material Steel