Eminence PF-400

• Sensitivity (1W, 1m, infinite baffle) SPL1W 100.2dB
• Frequency response 60 - 3600Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 58Hz
• Mechanical quality factor QMS 6.37
• Electrical quality factor QES 0.55
• Total quality factor QTS 0.50

Large signal parameters

• Maximum linear excursion xmax 0.8mm
• Air volume displaced at xmax VD 70cm³
• Power handling P 400W
• Program power Pmax 800W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.5Ω
• Inductance (1kHz) LE 0.46mH
• VC Diameter 102mm
• Winding material Edge Wound Aluminum
• Former material Polyimide

Magnet

• Force factor Bl 18.3N/A
• Motor constant Bl/√RE 6.72N/√W
• Air gap height HAG 7.2mm
• Weight 3.09kg
• Material Ferrite

Diaphragm

• Effective diameter 337mm
• Effective area SD 890cm²
• Moving mass MMS 67g
• Moving mass (without air load) MMD 48.8g
• Material Paper

Suspensions

• Stiffness KMS 9.09N/mm
• Compliance CMS 110µm/N
• Equivalent volume to the compliance VAS 121L
• Mechanical resistance RMS 3.83N·s/m
• Surround material Coth

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 388mm
• Baffle cutout diameter 357mm
• Overall depth 152mm
• Volume occupied by the driver 4.31L
• Net weight 10.25kg
• Frame material Die-cast aluminum