B&C Speaker 12PLB76

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.1dB
• Frequency response 50 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 50Hz
• Mechanical quality factor QMS 5.30
• Electrical quality factor QES 0.24
• Total quality factor QTS 0.23

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 5.0Ω
• Inductance (1kHz) LE 1.2mH
• VC Diameter 76mm
• Winding height HVC 16mm
• Winding material Aluminium
• Former material Glass Fibre

Magnet

• Flux density B 1.05T
• Force factor Bl 18.6N/A
• Motor constant Bl/√RE 8.32N/√W
• Air gap height HAG 11mm
• Material Ferrite

Diaphragm

• Effective diameter 258mm
• Effective area SD 522cm²
• Moving mass MMS 51g
• Moving mass (without air load) MMD 42.4g

Suspensions

• Stiffness KMS 5.21N/mm
• Compliance CMS 192µm/N
• Equivalent volume to the compliance VAS 75L
• Mechanical resistance RMS 3.02N·s/m

Dimensions

• Nominal diameter 12″
• 320mm
• Overall diameter 316mm
• Baffle cutout diameter 282mm
• Overall depth 136mm
• Flange thickness 16mm
• Mounting depth 120mm
• Volume occupied by the driver 3.3L
• Net weight 6.55kg