B&C Speaker 12FW76

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.8dB
• Frequency response 55 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 54Hz
• Mechanical quality factor QMS 3.80
• Electrical quality factor QES 0.18
• Total quality factor QTS 0.18

Large signal parameters

• Maximum linear excursion xmax 7mm
• Air volume displaced at xmax VD 365cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.1Ω
• Inductance (1kHz) LE 1.4mH
• VC Diameter 76mm
• Winding height HVC 19mm
• Winding material Copper
• Former material Glass Fibre

Magnet

• Flux density B 1.35T
• Force factor Bl 26.4N/A
• Motor constant Bl/√RE 11.7N/√W
• Air gap height HAG 11mm
• Material Ferrite

Diaphragm

• Effective diameter 258mm
• Effective area SD 522cm²
• Moving mass MMS 75g
• Moving mass (without air load) MMD 66.4g
• Material Waterproof Front Side

Suspensions

• Stiffness KMS 8.33N/mm
• Compliance CMS 120µm/N
• Equivalent volume to the compliance VAS 45L
• Mechanical resistance RMS 6.7N·s/m

Dimensions

• Nominal diameter 12″
• 320mm
• Overall diameter 315mm
• Baffle cutout diameter 283mm
• Overall depth 147mm
• Flange thickness 12mm
• Mounting depth 135mm
• Volume occupied by the driver 3L
• Net weight 8.55kg