Eminence DELTA-12LFC

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.1dB
• Frequency response 45 - 2300Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 52Hz
• Mechanical quality factor QMS 8.21
• Electrical quality factor QES 0.47
• Total quality factor QTS 0.44

Large signal parameters

• Maximum linear excursion xmax 4.8mm
• Maximum excursion before damage xlim 13.5mm
• Air volume displaced at xmax VD 243cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz) LE 0.94mH
• VC Diameter 63.5mm
• Winding material Copper
• Former material Kapton

Magnet

• Force factor Bl 10.9N/A
• Motor constant Bl/√RE 6.09N/√W
• Air gap height HAG 9.5mm
• Weight 1.588kg
• Material Ferrite

Diaphragm

• Effective diameter 254mm
• Effective area SD 507cm²
• Moving mass MMS 53g
• Moving mass (without air load) MMD 44.9g
• Material Treated paper

Suspensions

• Stiffness KMS 5.88N/mm
• Compliance CMS 170µm/N
• Equivalent volume to the compliance VAS 63.7L
• Mechanical resistance RMS 2.11N·s/m
• Surround material Cloth

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 306mm
• Baffle cutout diameter 281mm
• Overall depth 136mm
• Volume occupied by the driver 2.24L
• Net weight 5.352kg
• Frame material Pressed Steel