B&C Speaker 12NW76

• Sensitivity (1W, 1m, infinite baffle)SPL1W96.3dB
• Frequency response40 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air)fS40Hz
• Mechanical quality factorQMS3.70
• Electrical quality factorQES0.17
• Total quality factorQTS0.16

Large signal parameters

• Maximum linear excursionxmax8mm
• Air volume displaced at xmaxVD418cm³
• Power handlingP500W
• Program powerPmax1000W

Voice Coil

• Nominal impedanceZ8Ω
• DC resistanceRE5.3Ω
• Inductance (1kHz)LE1.25mH
• VC Diameter76mm
• Winding heightHVC19mm
• Winding materialCopper
• Former materialGlass Fibre

Magnet

• Flux densityB1.3T
• Force factorBl25.5N/A
• Motor constantBl/√RE11.1N/√W
• Air gap heightHAG11mm
• MaterialNeodymium Ring

Diaphragm

• Effective diameter258mm
• Effective areaSD522cm²
• Moving massMMS77g
• Moving mass (without air load)MMD68.4g
• MaterialWaterproof Both Sides

Suspensions

• StiffnessKMS5.24N/mm
• ComplianceCMS191µm/N
• Equivalent volume to the complianceVAS76L
• Mechanical resistanceRMS5.23N·s/m

Dimensions

• Nominal diameter12″
• 320mm
• Overall diameter315mm
• Baffle cutout diameter283mm
• Overall depth147mm
• Flange thickness14mm
• Mounting depth133mm
• Volume occupied by the driver2.5L
• Net weight4.9kg