B&C Speaker 12FCX76

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95dB
• Frequency response 47 - 18000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 47Hz
• Mechanical quality factor QMS 11.00
• Electrical quality factor QES 0.35
• Total quality factor QTS 0.34

Large signal parameters

• Maximum linear excursion xmax 5mm
• Air volume displaced at xmax VD 261cm³
• Power handling P 350W
• Program power Pmax 700W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.3Ω
• Inductance (1kHz) LE 1.3mH
• VC Diameter 76mm
• Winding height HVC 16.5mm
• Winding material Copper
• Former material Glass Fibre

Magnet

• Flux density B 1T
• Force factor Bl 15.6N/A
• Motor constant Bl/√RE 6.78N/√W
• Air gap height HAG 8mm
• Material Ferrite

Diaphragm

• Effective diameter 258mm
• Effective area SD 522cm²
• Moving mass MMS 54g
• Moving mass (without air load) MMD 45.4g
• Material Waterproof Front Side

Suspensions

• Stiffness KMS 4.74N/mm
• Compliance CMS 211µm/N
• Equivalent volume to the compliance VAS 82L
• Mechanical resistance RMS 1.45N·s/m

Dimensions

• Nominal diameter 12″
• 320mm
• Overall diameter 315mm
• Baffle cutout diameter 282mm
• Overall depth 169mm
• Flange thickness 14mm
• Mounting depth 155mm
• Volume occupied by the driver (estimated) 3.7L
• Net weight 8.25kg