P.Audio 15NT-88MB

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.5dB
• Frequency response 50 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 51Hz
• Mechanical quality factor QMS 9.49
• Electrical quality factor QES 0.51
• Total quality factor QTS 0.48

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Air volume displaced at xmax VD 385cm³
• Power handling P 700W
• Program power Pmax 1400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.8Ω
• Inductance (1kHz) LE 0.52mH
• 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 19.6N/A
• Motor constant Bl/√RE 7.52N/√W
• Air gap height HAG 10mm
• Material Neodymium

Diaphragm

• Effective diameter 336mm
• Effective area SD 855cm²
• Moving mass MMS 89.2g
• Moving mass (without air load) MMD 71.9g
• Material Waterproof Paper

Suspensions

• Stiffness KMS 8.77N/mm
• Compliance CMS 114µm/N
• Equivalent volume to the compliance VAS 119L
• Mechanical resistance RMS 3.01N·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) 3.8L
• Net weight 6.3kg
• Frame material Aluminium