B&C Speaker 12NW76

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.3dB
• Frequency response 40 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 40Hz
• Mechanical quality factor QMS 3.70
• Electrical quality factor QES 0.17
• Total quality factor QTS 0.16

Large signal parameters

• Maximum linear excursion xmax 8mm
• Air volume displaced at xmax VD 418cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.3Ω
• Inductance (1kHz) LE 1.25mH
• VC Diameter 76mm
• Winding height HVC 19mm
• Winding material Copper
• Former material Glass Fibre

Magnet

• Flux density B 1.3T
• Force factor Bl 25.5N/A
• Motor constant Bl/√RE 11.1N/√W
• Air gap height HAG 11mm
• Material Neodymium Ring

Diaphragm

• Effective diameter 258mm
• Effective area SD 522cm²
• Moving mass MMS 77g
• Moving mass (without air load) MMD 68.4g
• Material Waterproof Both Sides

Suspensions

• Stiffness KMS 5.24N/mm
• Compliance CMS 191µm/N
• Equivalent volume to the compliance VAS 76L
• Mechanical resistance RMS 5.23N·s/m

Dimensions

• Nominal diameter 12″
• 320mm
• Overall diameter 315mm
• Baffle cutout diameter 283mm
• Overall depth 147mm
• Flange thickness 14mm
• Mounting depth 133mm
• Volume occupied by the driver 2.5L
• Net weight 4.9kg