Celestion FTR10-2055D

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.2dB
• Frequency response 60 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 57.5Hz
• Mechanical quality factor QMS 2.73
• Electrical quality factor QES 0.39
• Total quality factor QTS 0.34

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 139cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.9Ω
• Inductance (1kHz) LE 0.46mH
• VC Diameter 50mm
• Winding height HVC 16mm
• Winding material Round copper
• Former material Glass fibre

Magnet

• Force factor Bl 13.8N/A
• Motor constant Bl/√RE 5.7N/√W
• Air gap height HAG 8mm
• Weight 1.3kg
• Material Ferrite

Diaphragm

• Effective diameter 210mm
• Effective area SD 346cm²
• Moving mass MMS 35.2g
• Moving mass (without air load) MMD 30.5g
• Material Kevlar loaded paper

Suspensions

• Stiffness KMS 4.55N/mm
• Compliance CMS 220µm/N
• Equivalent volume to the compliance VAS 36.9L
• Mechanical resistance RMS 4.65N·s/m
• Surround material Cloth-sealed

Dimensions

• Nominal diameter 10″
• 254mm
• Overall diameter 260mm
• Baffle cutout diameter 232mm
• Overall depth 112mm
• Volume occupied by the driver (estimated) 1.6L
• Net weight 4.0kg
• Frame material Cast aluminium