P.Audio 15BM-500B v3

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.4dB
• Frequency response 45 - 3500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 41Hz
• Mechanical quality factor QMS 4.21
• Electrical quality factor QES 0.41
• Total quality factor QTS 0.37

Large signal parameters

• Maximum linear excursion xmax 4.8mm
• Air volume displaced at xmax VD 411cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.5Ω
• Inductance (1kHz) LE 0.43mH
• VC Diameter 82.5mm
• Winding height HVC 19.6mm
• Winding material CCA-W
• Former material Glass fiber

Magnet

• Flux density B 1.1T
• Force factor Bl 17.8N/A
• Motor constant Bl/√RE 7.57N/√W
• Air gap height HAG 10mm
• Material Ferrite

Diaphragm

• Effective diameter 332mm
• Effective area SD 855cm²
• Moving mass MMS 90g
• Moving mass (without air load) MMD 72.4g
• Material Paper

Suspensions

• Stiffness KMS 5.65N/mm
• Compliance CMS 177µm/N
• Equivalent volume to the compliance VAS 183L
• Mechanical resistance RMS 5.51N·s/m
• Surround material Cloth
• Spider material Cotton (Single)

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 392mm
• Baffle cutout diameter 353mm
• Overall depth 174mm
• Flange thickness 16mm
• Mounting depth 158mm
• Volume occupied by the driver (estimated) 4.9L
• Net weight 10.2kg
• Frame material Aluminium