Celestion TFX0512

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.3dB
• Frequency response 70 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 69.1Hz
• Mechanical quality factor QMS 6.18
• Electrical quality factor QES 0.49
• Total quality factor QTS 0.46

Large signal parameters

• Maximum linear excursion xmax 3.3mm
• Air volume displaced at xmax VD 26cm³
• Power handling P 100W
• Program power Pmax 200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.5Ω
• Inductance (1kHz) LE 0.37mH
• VC Diameter 32mm
• Winding height HVC 12mm
• Winding material Round copper
• Former material Polyimide

Magnet

• Force factor Bl 6.42N/A
• Motor constant Bl/√RE 2.75N/√W
• Air gap height HAG 6mm
• Weight 0.48kg
• Material Ferrite

Diaphragm

• Effective diameter 100mm
• Effective area SD 78.5cm²
• Moving mass MMS 8.6g
• Moving mass (without air load) MMD 8g
• Material Kevlar loaded paper

Suspensions

• Stiffness KMS 1.61N/mm
• Compliance CMS 620µm/N
• Equivalent volume to the compliance VAS 5.38L
• Mechanical resistance RMS 0.6N·s/m
• Surround material Elastomer

Dimensions

• Nominal diameter 5″
• 125mm
• Overall diameter 151mm
• Baffle cutout diameter 116mm
• Overall depth 72mm
• Volume occupied by the driver (estimated) 0.53L
• Net weight 2.0kg
• Frame material Pressed steel