Eighteen Sound 10NTLW3500 16Ω

• Sensitivity (1W, 1m, infinite baffle) SPL1W 92dB
• Frequency response 60 - 3500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 64Hz
• Mechanical quality factor QMS 10.80
• Electrical quality factor QES 0.46
• Total quality factor QTS 0.45

Large signal parameters

• Maximum linear excursion xmax 6.4mm
• Air volume displaced at xmax VD 221cm³
• Power handling P 800W
• Program power Pmax 1600W

Voice Coil

• Nominal impedance Z 16Ω
• DC resistance RE 11.4Ω
• Inductance (1kHz) LE 0.69mH
• VC Diameter 88mm
• Winding height HVC 19mm

Magnet

• Force factor Bl 23.9N/A
• Motor constant Bl/√RE 7.08N/√W
• Air gap height HAG 12.5mm
• Material Neodymium

Diaphragm

• Effective diameter 210mm
• Effective area SD 346cm²
• Moving mass MMS 58g
• Moving mass (without air load) MMD 53.3g
• Material Reinforced, water repellent

Suspensions

• Stiffness KMS 9.35N/mm
• Compliance CMS 107µm/N
• Equivalent volume to the compliance VAS 18.1L
• Mechanical resistance RMS 2.16N·s/m

Dimensions

• Nominal diameter 10″
• 260mm
• Overall diameter 260mm
• Baffle cutout diameter 233mm
• Overall depth 177mm
• Flange thickness 10mm
• Mounting depth 167mm
• Volume occupied by the driver (estimated) 2.2L
• Net weight 4.2kg