Eminence LAB12C

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.2dB
• Frequency response 25 - 100Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 23Hz
• Mechanical quality factor QMS 11.70
• Electrical quality factor QES 0.34
• Total quality factor QTS 0.33

Large signal parameters

• Maximum linear excursion xmax 13mm
• Maximum excursion before damage xlim 22mm
• Air volume displaced at xmax VD 659cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.1Ω
• Inductance (1kHz) LE 1.09mH
• VC Diameter 64mm
• Winding material Copper
• Former material Polyimide

Magnet

• Force factor Bl 13.4N/A
• Motor constant Bl/√RE 7.58N/√W
• Air gap height HAG 9.5mm
• Weight 4.536kg
• Material Ferrite

Diaphragm

• Effective diameter 254mm
• Effective area SD 507cm²
• Moving mass MMS 136g
• Moving mass (without air load) MMD 128g
• Material Kevlar-reinforced paper

Suspensions

• Stiffness KMS 2.78N/mm
• Compliance CMS 360µm/N
• Equivalent volume to the compliance VAS 128L
• Mechanical resistance RMS 1.68N·s/m
• Surround material Foam

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 313mm
• Baffle cutout diameter 280mm
• Overall depth 164mm
• Volume occupied by the driver 3.09L
• Net weight 9.98kg
• Frame material 12-spoke die-cast aluminum