P.Audio 15NT-76MB

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.9dB
• Frequency response 40 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 43Hz
• Mechanical quality factor QMS 10.92
• Electrical quality factor QES 0.47
• Total quality factor QTS 0.45

Large signal parameters

• Maximum linear excursion xmax 4.8mm
• Air volume displaced at xmax VD 406cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.2Ω
• Inductance (1kHz) LE 0.59mH
• 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 17.5N/A
• Motor constant Bl/√RE 7.03N/√W
• Air gap height HAG 9.5mm
• Material Neodymium

Diaphragm

• Effective diameter 331mm
• Effective area SD 855cm²
• Moving mass MMS 86.4g
• Moving mass (without air load) MMD 69.1g
• Material Waterproof Paper

Suspensions

• Stiffness KMS 5.92N/mm
• Compliance CMS 169µm/N
• Equivalent volume to the compliance VAS 176L
• Mechanical resistance RMS 2.14N·s/m
• Surround material Cloth
• Spider material Cotton

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 386mm
• Baffle cutout diameter 353mm
• Overall depth 190mm
• Flange thickness 15mm
• Mounting depth 175mm
• Volume occupied by the driver (estimated) 3.6L
• Net weight 5.9kg
• Frame material Aluminium