HELIX COMPOSE Ci3 M100FM-S3

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.4dB
• Frequency response 120 - 6000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 146Hz
• Mechanical quality factor QMS 4.49
• Electrical quality factor QES 1.02
• Total quality factor QTS 0.83

Large signal parameters

• Maximum linear excursion xmax 2mm
• Air volume displaced at xmax VD 11cm³
• Power handling P 80W
• Program power Pmax 120W

Voice Coil

• Nominal impedance Z 3Ω
• DC resistance RE 3.0Ω
• Inductance (1kHz, estimated) LE 0.18mH
• VC Diameter 25mm
• Winding height HVC 4.8mm

Magnet

• Force factor Bl 3.4N/A
• Motor constant Bl/√RE 1.96N/√W

Diaphragm

• Effective diameter 82mm
• Effective area SD 53cm²
• Moving mass MMS 4.3g
• Moving mass (without air load) MMD 4g

Suspensions

• Stiffness KMS 3.57N/mm
• Compliance CMS 280µm/N
• Equivalent volume to the compliance VAS 1.1L
• Mechanical resistance RMS 0.87N·s/m

Dimensions

• Nominal diameter 4″
• 100mm
• Overall diameter 98mm
• Baffle cutout diameter 89mm
• Mounting depth 30mm
• Volume occupied by the driver (estimated) 0.13L