Eminence EPS-12C

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.9dB
• Frequency response 65 - 4900Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 49Hz
• Mechanical quality factor QMS 10.20
• Electrical quality factor QES 0.24
• Total quality factor QTS 0.24

Large signal parameters

• Maximum linear excursion xmax 3mm
• Maximum excursion before damage xlim 9.1mm
• Air volume displaced at xmax VD 156cm³
• Power handling P 225W
• Program power Pmax 450W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.6Ω
• Inductance (1kHz) LE 0.42mH
• VC Diameter 76mm
• Winding material Edge Wound Aluminum
• Former material Kapton

Magnet

• Force factor Bl 14.7N/A
• Motor constant Bl/√RE 7.8N/√W
• Air gap height HAG 9.1mm
• Weight 0.31kg
• Material Neodymium

Diaphragm

• Effective diameter 257mm
• Effective area SD 520cm²
• Moving mass MMS 47g
• Moving mass (without air load) MMD 38.5g
• Material Paper

Suspensions

• Stiffness KMS 4.55N/mm
• Compliance CMS 220µm/N
• Equivalent volume to the compliance VAS 82.4L
• Mechanical resistance RMS 1.42N·s/m
• Surround material Cloth

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 315mm
• Baffle cutout diameter 315mm
• Overall depth 143mm
• Volume occupied by the driver 1.53L
• Net weight 3.22kg
• Frame material Die Cast Aluminum