HELIX COMPOSE Ci7 M100FM-S3

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.6dB
• Frequency response 110 - 7000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 85Hz
• Mechanical quality factor QMS 4.58
• Electrical quality factor QES 0.52
• Total quality factor QTS 0.47

Large signal parameters

• Maximum linear excursion xmax 1.3mm
• Air volume displaced at xmax VD 7.2cm³
• Power handling P 100W
• Program power Pmax 150W

Voice Coil

• Nominal impedance Z 3Ω
• DC resistance RE 3.0Ω
• Inductance (1kHz, estimated) LE 0.22mH
• VC Diameter 25mm
• Winding height HVC 5.5mm

Magnet

• Force factor Bl 4.3N/A
• Motor constant Bl/√RE 2.48N/√W

Diaphragm

• Effective diameter 84mm
• Effective area SD 55cm²
• Moving mass MMS 5.9g
• Moving mass (without air load) MMD 5.6g

Suspensions

• Stiffness KMS 1.7N/mm
• Compliance CMS 590µm/N
• Equivalent volume to the compliance VAS 2.5L
• Mechanical resistance RMS 0.69N·s/m

Dimensions

• Nominal diameter 4″
• 100mm
• Overall diameter 98mm
• Baffle cutout diameter 89mm
• Mounting depth 27mm
• Volume occupied by the driver (estimated) 0.13L