B&C Speaker 12FHX76

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.4dB
• Frequency response 45 - 18000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 48Hz
• Mechanical quality factor QMS 5.40
• Electrical quality factor QES 0.36
• Total quality factor QTS 0.33

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 209cm³
• Power handling P 350W
• Program power Pmax 700W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 1.6mH
• VC Diameter 76mm
• Winding height HVC 16.5mm
• Winding material Copper
• Former material Glass Fibre

Magnet

• Flux density B 1T
• Force factor Bl 14.4N/A
• Motor constant Bl/√RE 6.31N/√W
• Air gap height HAG 8mm
• Material Ferrite

Diaphragm

• Effective diameter 258mm
• Effective area SD 522cm²
• Moving mass MMS 47g
• Moving mass (without air load) MMD 38.4g
• Material Waterproof Front Side

Suspensions

• Stiffness KMS 4.33N/mm
• Compliance CMS 231µm/N
• Equivalent volume to the compliance VAS 88L
• Mechanical resistance RMS 2.62N·s/m

Dimensions

• Nominal diameter 12″
• 320mm
• Overall diameter 315mm
• Baffle cutout diameter 284mm
• Overall depth 169mm
• Flange thickness 13mm
• Mounting depth 156mm
• Volume occupied by the driver (estimated) 3.7L
• Net weight 8.4kg