Eighteen Sound 8NTLW2000 16Ω

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.1dB
• Frequency response 60 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 74Hz
• Mechanical quality factor QMS 12.90
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.26

Large signal parameters

• Maximum linear excursion xmax 4.4mm
• Air volume displaced at xmax VD 100cm³
• Power handling P 350W
• Program power Pmax 700W

Voice Coil

• Nominal impedance Z 16Ω
• DC resistance RE 11.1Ω
• Inductance (1kHz) LE 1.34mH
• VC Diameter 51mm
• Winding height HVC 13mm
• Winding material Aluminum

Magnet

• Force factor Bl 22.4N/A
• Motor constant Bl/√RE 6.72N/√W
• Air gap height HAG 8.5mm
• Material Neodymium

Diaphragm

• Effective diameter 170mm
• Effective area SD 227cm²
• Moving mass MMS 27g
• Moving mass (without air load) MMD 24.5g
• Material Weather protected

Suspensions

• Stiffness KMS 5.85N/mm
• Compliance CMS 171µm/N
• Equivalent volume to the compliance VAS 11.3L
• Mechanical resistance RMS 0.97N·s/m

Dimensions

• Nominal diameter 8″
• 210mm
• Overall diameter 210mm
• Baffle cutout diameter 186mm
• Overall depth 121mm
• Flange thickness 9mm
• Mounting depth 112mm
• Volume occupied by the driver (estimated) 0.76L
• Net weight 1.5kg