Eighteen Sound 6NTLW2000 16Ω

• Sensitivity (1W, 1m, infinite baffle) SPL1W 90.4dB
• Frequency response 100 - 7300Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 86Hz
• Mechanical quality factor QMS 3.38
• Electrical quality factor QES 0.43
• Total quality factor QTS 0.38

Large signal parameters

• Maximum linear excursion xmax 4.9mm
• Air volume displaced at xmax VD 65cm³
• Power handling P 320W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 16Ω
• DC resistance RE 9.0Ω
• Inductance (1kHz) LE 0.34mH
• VC Diameter 51mm
• Winding height HVC 14mm
• Winding material Aluminum

Magnet

• Force factor Bl 14.1N/A
• Motor constant Bl/√RE 4.7N/√W
• Air gap height HAG 8.5mm
• Material Neodymium

Diaphragm

• Effective diameter 130mm
• Effective area SD 133cm²
• Moving mass MMS 17.5g
• Moving mass (without air load) MMD 16.4g
• Material Weather protected

Suspensions

• Stiffness KMS 5.1N/mm
• Compliance CMS 196µm/N
• Equivalent volume to the compliance VAS 4.8L
• Mechanical resistance RMS 2.8N·s/m

Dimensions

• Nominal diameter 6.5″
• 152mm
• Overall diameter 162mm
• Baffle cutout diameter 148mm
• Overall depth 108mm
• Flange thickness 14mm
• Mounting depth 94mm
• Volume occupied by the driver (estimated) 0.52L
• Net weight 1.2kg