Ciare CMI250

• Sensitivity (1W, 1m, infinite baffle) SPL1W 92.1dB
• Frequency response 80 - 3500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 55Hz
• Mechanical quality factor QMS 12.00
• Electrical quality factor QES 0.52
• Total quality factor QTS 0.50

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Air volume displaced at xmax VD 160cm³
• Power handling P 220W
• Program power Pmax 450W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 2.9Ω
• Inductance (1kHz) LE 0.34mH
• VC Diameter 50mm
• Winding height HVC 12.5mm
• Winding material Copper
• Former material Glass fiber

Magnet

• Force factor Bl 9N/A
• Motor constant Bl/√RE 5.28N/√W
• Air gap height HAG 8mm
• Material Ferrite

Diaphragm

• Effective diameter 213mm
• Effective area SD 356cm²
• Moving mass MMS 42g
• Moving mass (without air load) MMD 37g
• Material Doped cellulose fiber

Suspensions

• Stiffness KMS 5.03N/mm
• Compliance CMS 199µm/N
• Equivalent volume to the compliance VAS 34L
• Mechanical resistance RMS 1.21N·s/m
• Surround material Nomex Fabric
• Spider material Nomex Fabric

Dimensions

• Nominal diameter 10″
• 250mm
• Overall diameter 268mm
• Baffle cutout diameter 235mm
• Overall depth 111mm
• Flange thickness 13mm
• Mounting depth 98mm
• Volume occupied by the driver (estimated) 1.4L
• Net weight 3.45kg
• Frame material Aluminium