Celestion TF0615

• Sensitivity (1W, 1m, infinite baffle) SPL1W 91.6dB
• Frequency response 85 - 6000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 105Hz
• Mechanical quality factor QMS 3.95
• Electrical quality factor QES 0.72
• Total quality factor QTS 0.61

Large signal parameters

• Maximum linear excursion xmax 1.8mm
• Air volume displaced at xmax VD 27cm³
• Power handling P 100W
• Program power Pmax 200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.1Ω
• Inductance (1kHz) LE 0.47mH
• VC Diameter 38mm
• Winding height HVC 6.5mm
• Winding material Round copper
• Former material Polyimide

Magnet

• Force factor Bl 8.85N/A
• Motor constant Bl/√RE 3.33N/√W
• Air gap height HAG 6mm
• Weight 0.48kg
• Material Ferrite

Diaphragm

• Effective diameter 140mm
• Effective area SD 154cm²
• Moving mass MMS 12.1g
• Moving mass (without air load) MMD 10.7g
• Material Kevlar loaded paper

Suspensions

• Stiffness KMS 5.26N/mm
• Compliance CMS 190µm/N
• Equivalent volume to the compliance VAS 6.41L
• Mechanical resistance RMS 2.01N·s/m
• Surround material Cloth-sealed

Dimensions

• Nominal diameter 6″
• 152mm
• Overall diameter 178mm
• Baffle cutout diameter 147mm
• Overall depth 74mm
• Volume occupied by the driver (estimated) 0.48L
• Net weight 1.4kg
• Frame material Pressed steel