Eminence OMEGA PRO-18A

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.3dB
• Frequency response 40 - 800Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 25Hz
• Mechanical quality factor QMS 8.18
• Electrical quality factor QES 0.32
• Total quality factor QTS 0.31

Large signal parameters

• Maximum linear excursion xmax 4.8mm
• Maximum excursion before damage xlim 16mm
• Air volume displaced at xmax VD 556cm³
• Power handling P 800W
• Program power Pmax 1600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 1.67mH
• VC Diameter 101.6mm
• Winding material Copper
• Former material Polyimide

Magnet

• Force factor Bl 18.8N/A
• Motor constant Bl/√RE 8.24N/√W
• Air gap height HAG 9.5mm
• Weight 3.09kg
• Material Ferrite

Diaphragm

• Effective diameter 384mm
• Effective area SD 1159cm²
• Moving mass MMS 137g
• Moving mass (without air load) MMD 109g
• Material Paper

Suspensions

• Stiffness KMS 3.45N/mm
• Compliance CMS 290µm/N
• Equivalent volume to the compliance VAS 549L
• Mechanical resistance RMS 2.63N·s/m
• Surround material Cloth

Dimensions

• Nominal diameter 18″
• 457mm
• Overall diameter 457mm
• Baffle cutout diameter 421mm
• Overall depth 207mm
• Volume occupied by the driver 6.63L
• Net weight 11.431kg
• Frame material Die-cast Aluminium