P.Audio 12NT-88MB

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.4dB
• Frequency response 55 - 3500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 55Hz
• Mechanical quality factor QMS 9.07
• Electrical quality factor QES 0.34
• Total quality factor QTS 0.32

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Air volume displaced at xmax VD 239cm³
• Power handling P 700W
• Program power Pmax 1400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.9Ω
• Inductance (1kHz) LE 0.56mH
• VC Diameter 88.9mm
• Winding height HVC 19mm
• Winding material Flat aluminium wire
• Former material Kapton

Magnet

• Flux density B 1.2T
• Force factor Bl 19.8N/A
• Motor constant Bl/√RE 7.52N/√W
• Air gap height HAG 10mm
• Material Neodymium

Diaphragm

• Effective diameter 263mm
• Effective area SD 531cm²
• Moving mass MMS 58.5g
• Moving mass (without air load) MMD 49.8g
• Material Waterproof Paper

Suspensions

• Stiffness KMS 6.85N/mm
• Compliance CMS 146µm/N
• Equivalent volume to the compliance VAS 58.5L
• Mechanical resistance RMS 2.23N·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) 2.8L
• Net weight 5.8kg
• Frame material Aluminium