B&C Speaker 12HPL76

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.9dB
• Frequency response 50 - 3500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 49Hz
• Mechanical quality factor QMS 2.50
• Electrical quality factor QES 0.26
• Total quality factor QTS 0.25

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 209cm³
• Power handling P 350W
• Program power Pmax 700W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.0Ω
• Inductance (1kHz) LE 1.5mH
• VC Diameter 76mm
• Winding height HVC 18mm
• Winding material Aluminium
• Former material Glass Fibre

Magnet

• Flux density B 1.15T
• Force factor Bl 17.3N/A
• Motor constant Bl/√RE 7.06N/√W
• Air gap height HAG 10mm
• Material Neodymium Inside Slug

Diaphragm

• Effective diameter 258mm
• Effective area SD 522cm²
• Moving mass MMS 43g
• Moving mass (without air load) MMD 34.4g

Suspensions

• Stiffness KMS 4.26N/mm
• Compliance CMS 235µm/N
• Equivalent volume to the compliance VAS 91L
• Mechanical resistance RMS 5.3N·s/m
• Spider material Single

Dimensions

• Nominal diameter 12″
• 320mm
• Overall diameter 315mm
• Baffle cutout diameter 282mm
• Overall depth 144mm
• Flange thickness 13mm
• Mounting depth 131mm
• Volume occupied by the driver 0L
• Net weight 3.2kg