Radian 2218Neo

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.9dB
• Frequency response 25 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 30Hz
• Mechanical quality factor QMS 3.20
• Electrical quality factor QES 0.25
• Total quality factor QTS 0.23

Large signal parameters

• Maximum linear excursion xmax 9mm
• Air volume displaced at xmax VD 1188cm³
• Power handling P 800W
• Program power Pmax 1600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 1.12mH
• VC Diameter 101.6mm
• Winding height HVC 23mm
• Winding material Aluminum
• Former material Fiberglass

Magnet

• Force factor Bl 33N/A
• Motor constant Bl/√RE 14.2N/√W
• Air gap height HAG 10mm
• Material Neodymium

Diaphragm

• Effective diameter 410mm
• Effective area SD 1320cm²
• Moving mass MMS 266g
• Moving mass (without air load) MMD 234g
• Material Paper/Kevlar fiber composite

Suspensions

• Stiffness KMS 8.33N/mm
• Compliance CMS 120µm/N
• Equivalent volume to the compliance VAS 312L
• Mechanical resistance RMS 15.7N·s/m

Dimensions

• Nominal diameter 18″
• 460mm
• Overall diameter 464mm
• Baffle cutout diameter 429mm
• Overall depth 181mm
• Volume occupied by the driver (estimated) 4.8L
• Net weight 8.0kg
• Frame material Cast Aluminum