Eminence OMEGA PRO-18C

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.1dB
• Frequency response 40 - 800Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 23Hz
• Mechanical quality factor QMS 6.41
• Electrical quality factor QES 0.29
• Total quality factor QTS 0.28

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 4Ω
• DC resistance RE 2.5Ω
• Inductance (1kHz) LE 0.61mH
• VC Diameter 102mm
• Winding material Copper
• Former material Polyimide

Magnet

• Force factor Bl 13.4N/A
• Motor constant Bl/√RE 8.47N/√W
• Air gap height HAG 9.5mm
• Weight 3.09kg
• Material Ferrite

Diaphragm

• Effective diameter 384mm
• Effective area SD 1159cm²
• Moving mass MMS 146g
• Moving mass (without air load) MMD 118g
• Material Paper

Suspensions

• Stiffness KMS 2.94N/mm
• Compliance CMS 340µm/N
• Equivalent volume to the compliance VAS 639L
• Mechanical resistance RMS 3.29N·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 6.62L
• Net weight 11.43kg
• Frame material Die-cast aluminum