P.Audio 15FT-88MB

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.5dB
• Frequency response 50 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 54Hz
• Mechanical quality factor QMS 10.15
• Electrical quality factor QES 0.63
• Total quality factor QTS 0.59

Large signal parameters

• Maximum linear excursion xmax 4.8mm
• Air volume displaced at xmax VD 406cm³
• Power handling P 700W
• Program power Pmax 1400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.8Ω
• Inductance (1kHz) LE 0.71mH
• VC Diameter 88.9mm
• Winding height HVC 19mm
• Winding material Flat aluminium wire
• Former material Kapton

Magnet

• Flux density B 1.3T
• Force factor Bl 17.8N/A
• Motor constant Bl/√RE 6.82N/√W
• Air gap height HAG 9.5mm
• Material Ferrite

Diaphragm

• Effective diameter 336mm
• Effective area SD 855cm²
• Moving mass MMS 86.1g
• Moving mass (without air load) MMD 68.6g
• Material Paper

Suspensions

• Stiffness KMS 9.62N/mm
• Compliance CMS 104µm/N
• Equivalent volume to the compliance VAS 108L
• Mechanical resistance RMS 2.88N·s/m
• Surround material Cloth
• Spider material Cotton

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 390mm
• Baffle cutout diameter 350mm
• Overall depth 180mm
• Flange thickness 14mm
• Mounting depth 166mm
• Volume occupied by the driver (estimated) 4.8L
• Net weight 9.5kg
• Frame material Aluminium