Celestion K12H-200TC

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.3dB
• Frequency response 50 - 10000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 62.3Hz
• Mechanical quality factor QMS 2.80
• Electrical quality factor QES 0.43
• Total quality factor QTS 0.37

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 212cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.8Ω
• Inductance (1kHz) LE 0.63mH
• VC Diameter 50mm
• Winding height HVC 12mm
• Winding material Round copper
• Former material Polyimide

Magnet

• Force factor Bl 14.6N/A
• Motor constant Bl/√RE 6.07N/√W
• Air gap height HAG 8mm
• Weight 1.41kg
• Material Ferrite

Diaphragm

• Effective diameter 260mm
• Effective area SD 531cm²
• Moving mass MMS 40.6g
• Moving mass (without air load) MMD 32g
• Material Kevlar loaded paper

Suspensions

• Stiffness KMS 6.84N/mm
• Compliance CMS 146µm/N
• Equivalent volume to the compliance VAS 64.1L
• Mechanical resistance RMS 5.67N·s/m
• Surround material Cloth-sealed

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 309mm
• Baffle cutout diameter 283mm
• Overall depth 130mm
• Volume occupied by the driver (estimated) 1.9L
• Net weight 3.9kg
• Frame material Pressed steel