P.Audio 15FT-76MB

• Sensitivity (1W, 1m, infinite baffle) SPL1W 98.1dB
• Frequency response 40 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 42Hz
• Mechanical quality factor QMS 10.13
• Electrical quality factor QES 0.37
• Total quality factor QTS 0.36

Large signal parameters

• Maximum linear excursion xmax 4.8mm
• Air volume displaced at xmax VD 419cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.2Ω
• Inductance (1kHz) LE 0.83mH
• VC Diameter 76.2mm
• Winding height HVC 19mm
• Winding material Flat aluminium wire
• Former material Kapton

Magnet

• Flux density B 1.3T
• Force factor Bl 18.7N/A
• Motor constant Bl/√RE 7.49N/√W
• Air gap height HAG 9.5mm
• Material Ferrite

Diaphragm

• Effective diameter 331mm
• Effective area SD 881cm²
• Moving mass MMS 77.9g
• Moving mass (without air load) MMD 59.8g
• Material Paper

Suspensions

• Stiffness KMS 5.68N/mm
• Compliance CMS 176µm/N
• Equivalent volume to the compliance VAS 194L
• Mechanical resistance RMS 2.03N·s/m
• Surround material Cloth
• Spider material Cotton

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 390mm
• Baffle cutout diameter 350mm
• Overall depth 174mm
• Flange thickness 14mm
• Mounting depth 160mm
• Volume occupied by the driver (estimated) 4.4L
• Net weight 8.6kg
• Frame material Aluminium