Ciare CM087

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.1dB
• Frequency response 150 - 10000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 122Hz
• Mechanical quality factor QMS 3.20
• Electrical quality factor QES 0.80
• Total quality factor QTS 0.64

Large signal parameters

• Maximum linear excursion xmax 1.5mm
• Air volume displaced at xmax VD 5.3cm³
• Power handling P 30W
• Program power Pmax 90W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.5Ω
• Inductance (1kHz) LE 0.14mH
• VC Diameter 20mm
• Winding height HVC 5mm
• Former material Aluminum

Magnet

• Force factor Bl 2.86N/A
• Motor constant Bl/√RE 1.53N/√W
• Air gap height HAG 4mm
• Material Ferrite

Diaphragm

• Effective diameter 67mm
• Effective area SD 35cm²
• Moving mass MMS 2.5g
• Moving mass (without air load) MMD 2.3g
• Material Cellulose fiber

Suspensions

• Stiffness KMS 1.43N/mm
• Compliance CMS 700µm/N
• Equivalent volume to the compliance VAS 1.2L
• Mechanical resistance RMS 0.6N·s/m
• Surround material Polyurethane

Dimensions

• Nominal diameter 3.5″
• 87mm
• Overall diameter 87mm
• Baffle cutout diameter 77mm
• Overall depth 41mm
• Flange thickness 5mm
• Mounting depth 36mm
• Volume occupied by the driver (estimated) 0.1L
• Net weight 0.33kg
• Frame material Steel