P.Audio C15-400B v2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.2dB
• Frequency response 55 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 42Hz
• Mechanical quality factor QMS 5.09
• Electrical quality factor QES 0.61
• Total quality factor QTS 0.55

Large signal parameters

• Maximum linear excursion xmax 3.3mm
• Air volume displaced at xmax VD 278cm³
• Power handling P 400W
• Program power Pmax 800W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 0.35mH
• VC Diameter 75.7mm
• Winding height HVC 18.5mm
• Winding material AL-W
• Former material Glass fiber

Magnet

• Flux density B 1.1T
• Force factor Bl 15.6N/A
• Motor constant Bl/√RE 6.69N/√W
• Air gap height HAG 12mm
• Material Ferrite

Diaphragm

• Effective diameter 332mm
• Effective area SD 855cm²
• Moving mass MMS 103g
• Moving mass (without air load) MMD 85.6g
• Material Paper

Suspensions

• Stiffness KMS 7.3N/mm
• Compliance CMS 137µm/N
• Equivalent volume to the compliance VAS 142L
• Mechanical resistance RMS 5.4N·s/m
• Surround material Cloth
• Spider material Cotton (Single)

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 386mm
• Baffle cutout diameter 353mm
• Overall depth 184mm
• Flange thickness 16mm
• Mounting depth 168mm
• Volume occupied by the driver (estimated) 5L
• Net weight 10.1kg
• Frame material Aluminium