Fane IMPERIUM 18NDXL

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.2dB
• Frequency response 30 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 33Hz
• Mechanical quality factor QMS 17.70
• Electrical quality factor QES 0.30
• Total quality factor QTS 0.30

Large signal parameters

• Maximum linear excursion xmax 12mm
• Air volume displaced at xmax VD 1397cm³
• Power handling P 1200W
• Program power Pmax 2400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 2.76mH
• VC Diameter 127mm
• Winding height HVC 28mm
• Winding material Copper
• Former material Glass Fibre

Magnet

• Flux density B 1.2T
• Force factor Bl 29.4N/A
• Motor constant Bl/√RE 12.4N/√W
• Air gap height HAG 12mm
• Material Neodymium

Diaphragm

• Effective diameter 398mm
• Effective area SD 1164cm²
• Moving mass MMS 220g
• Moving mass (without air load) MMD 191g
• Material Paper

Suspensions

• Stiffness KMS 9.43N/mm
• Compliance CMS 106µm/N
• Equivalent volume to the compliance VAS 203L
• Mechanical resistance RMS 2.58N·s/m
• Surround material Polyvinyl damped Poly Cotton

Dimensions

• Nominal diameter 18″
• 457mm
• Overall diameter 485mm
• Baffle cutout diameter 415mm
• Overall depth 204mm
• Flange thickness 12mm
• Mounting depth 192mm
• Volume occupied by the driver (estimated) 6.7L
• Net weight 11.5kg
• Frame material Die-cast Aluminium