Eminence LA12850

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.5dB
• Frequency response 63 - 2100Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 46Hz
• Mechanical quality factor QMS 12.73
• Electrical quality factor QES 0.32
• Total quality factor QTS 0.32

Large signal parameters

• Maximum linear excursion xmax 5mm
• Maximum excursion before damage xlim 14mm
• Air volume displaced at xmax VD 273cm³
• Power handling P 800W
• Program power Pmax 1600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.9Ω
• Inductance (1kHz) LE 0.96mH
• VC Diameter 102mm
• Winding material Copper
• Former material Polyimide

Magnet

• Force factor Bl 19.5N/A
• Motor constant Bl/√RE 8.05N/√W
• Air gap height HAG 9.5mm
• Weight 3.09kg
• Material Ferrite

Diaphragm

• Effective diameter 264mm
• Effective area SD 545cm²
• Moving mass MMS 73g
• Moving mass (without air load) MMD 64g
• Material Water resistant treated paper

Suspensions

• Stiffness KMS 6.25N/mm
• Compliance CMS 160µm/N
• Equivalent volume to the compliance VAS 66.1L
• Mechanical resistance RMS 1.66N·s/m
• Surround material Paper

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 313mm
• Baffle cutout diameter 281mm
• Overall depth 119mm
• Volume occupied by the driver 2.9L
• Net weight 9.3kg
• Frame material Die-cast aluminum