Celestion FTX0617

• Sensitivity (1W, 1m, infinite baffle) SPL1W 90.7dB
• Frequency response 100 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 100Hz
• Mechanical quality factor QMS 3.65
• Electrical quality factor QES 0.93
• Total quality factor QTS 0.74

Large signal parameters

• Maximum linear excursion xmax 3.5mm
• Air volume displaced at xmax VD 54cm³
• Power handling P 150W
• Program power Pmax 300W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.5Ω
• Inductance (1kHz) LE 0.27mH
• VC Diameter 44mm
• Winding height HVC 10mm
• Winding material Edgewound copper clad aluminium
• Former material Glass fibre

Magnet

• Force factor Bl 6.59N/A
• Motor constant Bl/√RE 2.8N/√W
• Air gap height HAG 6mm
• Weight 0.88kg
• Material Ferrite

Diaphragm

• Effective diameter 140mm
• Effective area SD 154cm²
• Moving mass MMS 11.6g
• Moving mass (without air load) MMD 10.1g
• Material Kevlar loaded paper

Suspensions

• Stiffness KMS 4.55N/mm
• Compliance CMS 220µm/N
• Equivalent volume to the compliance VAS 7.37L
• Mechanical resistance RMS 1.99N·s/m
• Surround material Cloth-sealed

Dimensions

• Nominal diameter 6.5″
• 165mm
• Overall diameter 189mm
• Baffle cutout diameter 150mm
• Overall depth 93mm
• Volume occupied by the driver (estimated) 0.93L
• Net weight 3.0kg
• Frame material Cast aluminium