B&C Speaker 12NBX100

• Sensitivity (1W, 1m, infinite baffle) SPL1W 92.8dB
• Frequency response 40 - 1500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 40Hz
• Mechanical quality factor QMS 7.05
• Electrical quality factor QES 0.23
• Total quality factor QTS 0.22

Large signal parameters

• Maximum linear excursion xmax 10mm
• Air volume displaced at xmax VD 531cm³
• Power handling P 1000W
• Program power Pmax 2000W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.6Ω
• Inductance (1kHz) LE 1.35mH
• VC Diameter 100mm
• Winding height HVC 25mm
• Winding material Copper
• Former material Glass Fibre

Magnet

• Flux density B 1.1T
• Force factor Bl 23N/A
• Motor constant Bl/√RE 12.1N/√W
• Air gap height HAG 11mm
• Material Neodymium Inside Slug

Diaphragm

• Effective diameter 260mm
• Effective area SD 531cm²
• Moving mass MMS 133g
• Moving mass (without air load) MMD 124g
• Material Waterproof Both Sides

Suspensions

• Stiffness KMS 8.55N/mm
• Compliance CMS 117µm/N
• Equivalent volume to the compliance VAS 46.5L
• Mechanical resistance RMS 4.74N·s/m
• Spider material Silicone

Dimensions

• Nominal diameter 12″
• 320mm
• Overall diameter 320mm
• Baffle cutout diameter 280mm
• Overall depth 143mm
• Flange thickness 12mm
• Mounting depth 131mm
• Volume occupied by the driver 4L
• Net weight 8.25kg