Ciare CZ087

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88dB

Thiele & Small parameters

• Resonance frequency (free air) fS 177Hz
• Mechanical quality factor QMS 5.56
• Electrical quality factor QES 2.57
• Total quality factor QTS 1.76

Large signal parameters

• Maximum linear excursion xmax 1.6mm
• Air volume displaced at xmax VD 5.2cm³
• Power handling P 30W
• Program power Pmax 80W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.5Ω
• Inductance (1kHz, estimated) LE 0.12mH
• VC Diameter 25mm
• Former material Aluminium

Magnet

• Force factor Bl 1.74N/A
• Motor constant Bl/√RE 0.93N/√W
• Air gap height HAG 3mm
• Material Ferrite

Diaphragm

• Effective diameter 65mm
• Effective area SD 32.7cm²
• Moving mass MMS 2g
• Moving mass (without air load) MMD 1.9g

Suspensions

• Stiffness KMS 2.44N/mm
• Compliance CMS 410µm/N
• Equivalent volume to the compliance VAS 0.62L
• Mechanical resistance RMS 0.4N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 3″
• 87mm
• Overall diameter 87mm
• Baffle cutout diameter 77mm
• Overall depth 36mm
• Flange thickness 8mm
• Mounting depth 28mm
• Frame material Steel