B&C Speaker 12CL76

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96dB
• Frequency response 45 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 48Hz
• Mechanical quality factor QMS 4.80
• Electrical quality factor QES 0.22
• Total quality factor QTS 0.21

Large signal parameters

• Maximum linear excursion xmax 6mm
• Air volume displaced at xmax VD 313cm³
• Power handling P 350W
• Program power Pmax 700W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 1.5mH
• VC Diameter 76mm
• Winding height HVC 17mm
• Winding material Copper
• Former material Glass Fibre

Magnet

• Flux density B 1.05T
• Force factor Bl 22.4N/A
• Motor constant Bl/√RE 9.82N/√W
• Air gap height HAG 11mm
• Material Neodymium Inside Slug

Diaphragm

• Effective diameter 258mm
• Effective area SD 522cm²
• Moving mass MMS 70g
• Moving mass (without air load) MMD 61.5g
• Material Waterproof Front Side

Suspensions

• Stiffness KMS 6.41N/mm
• Compliance CMS 156µm/N
• Equivalent volume to the compliance VAS 59L
• Mechanical resistance RMS 4.4N·s/m

Dimensions

• Nominal diameter 12″
• 320mm
• Overall diameter 313mm
• Baffle cutout diameter 282mm
• Overall depth 142mm
• Flange thickness 9mm
• Mounting depth 133mm
• Volume occupied by the driver 2.3L
• Net weight 3.35kg