Celestion F12-X200

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.3dB
• Frequency response 60 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 69.8Hz
• Mechanical quality factor QMS 12.01
• Electrical quality factor QES 0.83
• Total quality factor QTS 0.78

Large signal parameters

• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.9Ω
• Inductance (1kHz) LE 0.102mH
• VC Diameter 51mm
• Winding material Round copper

Magnet

• Force factor Bl 12.5N/A
• Motor constant Bl/√RE 5.14N/√W
• Diameter 170mm
• Height 67mm
• Material Ceramic

Diaphragm

• Effective diameter 260mm
• Effective area SD 569cm²
• Moving mass MMS 50.2g
• Moving mass (without air load) MMD 40.9g

Suspensions

• Stiffness KMS 9.71N/mm
• Compliance CMS 103µm/N
• Equivalent volume to the compliance VAS 47.3L
• Mechanical resistance RMS 1.83N·s/m

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 309mm
• Baffle cutout diameter 283mm
• Overall depth 165mm
• Volume occupied by the driver (estimated) 2.3L
• Net weight 4.1kg
• Frame material Pressed steel