P.Audio 12NX-76MB

• Sensitivity (1W, 1m, infinite baffle) SPL1W 98.9dB
• Frequency response 55 - 5000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 55Hz
• Mechanical quality factor QMS 10.53
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.27

Large signal parameters

• Maximum linear excursion xmax 4.8mm
• Air volume displaced at xmax VD 262cm³
• Power handling P 450W
• Program power Pmax 900W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.5Ω
• Inductance (1kHz) LE 0.4mH
• VC Diameter 76.2mm
• Winding height HVC 19mm
• Winding material Flat aluminium wire
• Former material Kapton

Magnet

• Flux density B 1.4T
• Force factor Bl 20.6N/A
• Motor constant Bl/√RE 8.08N/√W
• Air gap height HAG 9.5mm
• Material Neodymium

Diaphragm

• Effective diameter 263mm
• Effective area SD 552cm²
• Moving mass MMS 52.2g
• Moving mass (without air load) MMD 43.2g
• Material Waterproof Paper

Suspensions

• Stiffness KMS 6.37N/mm
• Compliance CMS 157µm/N
• Equivalent volume to the compliance VAS 67.8L
• Mechanical resistance RMS 1.71N·s/m
• Surround material Cloth
• Spider material Cotton

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 313mm
• Baffle cutout diameter 283mm
• Overall depth 150mm
• Flange thickness 19mm
• Mounting depth 131mm
• Volume occupied by the driver (estimated) 2.6L
• Frame material Aluminium