P.Audio 12NT-100MB

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.3dB
• Frequency response 60 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 55Hz
• Mechanical quality factor QMS 6.02
• Electrical quality factor QES 0.33
• Total quality factor QTS 0.32

Large signal parameters

• Maximum linear excursion xmax 2.6mm
• Air volume displaced at xmax VD 135cm³
• Power handling P 600W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 0.59mH
• VC Diameter 99.3mm
• Winding height HVC 15.1mm
• Winding material Flat aluminium wire
• Former material Kapton

Magnet

• Flux density B 1.1T
• Force factor Bl 19.7N/A
• Motor constant Bl/√RE 8.46N/√W
• Air gap height HAG 10mm
• Material Neodymium

Diaphragm

• Effective diameter 261mm
• Effective area SD 531cm²
• Moving mass MMS 70.1g
• Moving mass (without air load) MMD 61.4g
• Material Waterproof Paper

Suspensions

• Stiffness KMS 8.4N/mm
• Compliance CMS 119µm/N
• Equivalent volume to the compliance VAS 47.8L
• Mechanical resistance RMS 4.03N·s/m
• Surround material Cloth
• Spider material Cotton

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 313mm
• Baffle cutout diameter 283mm
• Overall depth 161mm
• Flange thickness 15mm
• Mounting depth 146mm
• Volume occupied by the driver (estimated) 2.8L
• Frame material Aluminium