Eminence BETA-12LTA

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.3dB
• Frequency response 48 - 8000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 45Hz
• Mechanical quality factor QMS 6.44
• Electrical quality factor QES 0.55
• Total quality factor QTS 0.51

Large signal parameters

• Maximum linear excursion xmax 3.2mm
• Maximum excursion before damage xlim 8mm
• Air volume displaced at xmax VD 170cm³
• Power handling P 225W
• Program power Pmax 450W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.4Ω
• Inductance (1kHz) LE 0.83mH
• VC Diameter 51mm
• Winding material Copper
• Former material Polyimide

Magnet

• Force factor Bl 11.7N/A
• Motor constant Bl/√RE 4.31N/√W
• Air gap height HAG 7.9mm
• Weight 1.077kg
• Material Ferrite

Diaphragm

• Effective diameter 260mm
• Effective area SD 532cm²
• Moving mass MMS 36g
• Moving mass (without air load) MMD 27.4g
• Material Paper

Suspensions

• Stiffness KMS 2.94N/mm
• Compliance CMS 340µm/N
• Equivalent volume to the compliance VAS 136L
• Mechanical resistance RMS 1.58N·s/m
• Surround material Cloth

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 306mm
• Baffle cutout diameter 281mm
• Overall depth 114mm
• Volume occupied by the driver 2L
• Net weight 3.67kg
• Frame material Pressed steel