HELIX COMPOSE Ci3 W200FM-S2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.4dB
• Frequency response 50 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 72Hz
• Mechanical quality factor QMS 4.56
• Electrical quality factor QES 1.09
• Total quality factor QTS 0.88

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 86cm³
• Power handling P 100W
• Program power Pmax 150W

Voice Coil

• Nominal impedance Z 2Ω
• DC resistance RE 1.8Ω
• Inductance (1kHz, estimated) LE 0.3mH
• VC Diameter 25mm
• Winding height HVC 11.9mm

Magnet

• Force factor Bl 4N/A
• Motor constant Bl/√RE 2.98N/√W

Diaphragm

• Effective diameter 165mm
• Effective area SD 214cm²
• Moving mass MMS 20.8g
• Moving mass (without air load) MMD 18.6g

Suspensions

• Stiffness KMS 4.35N/mm
• Compliance CMS 230µm/N
• Equivalent volume to the compliance VAS 14.5L
• Mechanical resistance RMS 2.07N·s/m

Dimensions

• Nominal diameter 8″
• 200mm
• Overall diameter 195mm
• Baffle cutout diameter 174mm
• Mounting depth 64mm
• Volume occupied by the driver (estimated) 0.77L