P.Audio 12NT-76MB

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.6dB
• Frequency response 55 - 5000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 50Hz
• Mechanical quality factor QMS 8.40
• Electrical quality factor QES 0.37
• Total quality factor QTS 0.36

Large signal parameters

• Maximum linear excursion xmax 4.8mm
• Air volume displaced at xmax VD 252cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.4Ω
• Inductance (1kHz) LE 0.58mH
• VC Diameter 76.2mm
• Winding height HVC 19mm
• Winding material Flat aluminium wire
• Former material Kapton

Magnet

• Flux density B 1.2T
• Force factor Bl 17.4N/A
• Motor constant Bl/√RE 6.88N/√W
• Air gap height HAG 9.5mm
• Material Neodymium

Diaphragm

• Effective diameter 261mm
• Effective area SD 531cm²
• Moving mass MMS 57g
• Moving mass (without air load) MMD 48.3g
• Material Waterproof Paper

Suspensions

• Stiffness KMS 5.59N/mm
• Compliance CMS 179µm/N
• Equivalent volume to the compliance VAS 71.6L
• Mechanical resistance RMS 2.13N·s/m
• Surround material Cloth
• Spider material Cotton

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 314mm
• Baffle cutout diameter 283mm
• Overall depth 164mm
• Flange thickness 15mm
• Mounting depth 149mm
• Volume occupied by the driver (estimated) 2.7L
• Net weight 5.3kg
• Frame material Aluminium