Eminence KAPPA PRO 18LF2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.8dB
• Frequency response 38 - 700Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 32Hz
• Mechanical quality factor QMS 10.66
• Electrical quality factor QES 0.34
• Total quality factor QTS 0.33

Large signal parameters

• Maximum linear excursion xmax 8mm
• Maximum excursion before damage xlim 18mm
• Air volume displaced at xmax VD 927cm³
• Power handling P 800W
• Program power Pmax 1600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 1.21mH
• VC Diameter 76.2mm
• Winding material Copper
• Former material Kapton

Magnet

• Force factor Bl 19.4N/A
• Motor constant Bl/√RE 8.35N/√W
• Air gap height HAG 9.5mm
• Weight 3.402kg
• Material Ferrite

Diaphragm

• Effective diameter 384mm
• Effective area SD 1159cm²
• Moving mass MMS 119g
• Moving mass (without air load) MMD 91.2g
• Material Treated paper

Suspensions

• Stiffness KMS 4.76N/mm
• Compliance CMS 210µm/N
• Equivalent volume to the compliance VAS 392L
• Mechanical resistance RMS 2.24N·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 11.113kg
• Frame material Die-cast Aluminium