HELIX COMPOSE Ci7 W130-S3

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.1dB
• Frequency response 70 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 73Hz
• Mechanical quality factor QMS 2.38
• Electrical quality factor QES 0.50
• Total quality factor QTS 0.41

Large signal parameters

• Maximum linear excursion xmax 3.4mm
• Air volume displaced at xmax VD 29cm³
• Power handling P 120W
• Program power Pmax 180W

Voice Coil

• Nominal impedance Z 3Ω
• DC resistance RE 2.9Ω
• Inductance (1kHz, estimated) LE 0.32mH
• VC Diameter 25mm
• Winding height HVC 12.8mm

Magnet

• Force factor Bl 5.5N/A
• Motor constant Bl/√RE 3.23N/√W

Diaphragm

• Effective diameter 104mm
• Effective area SD 85cm²
• Moving mass MMS 11.1g
• Moving mass (without air load) MMD 10.5g

Suspensions

• Stiffness KMS 2.38N/mm
• Compliance CMS 420µm/N
• Equivalent volume to the compliance VAS 4.3L
• Mechanical resistance RMS 2.15N·s/m

Dimensions

• Nominal diameter 5″
• 130mm
• Overall diameter 130mm
• Baffle cutout diameter 117mm
• Mounting depth 59mm
• Volume occupied by the driver (estimated) 0.27L