Eighteen Sound 12ND610

• Sensitivity (1W, 1m, infinite baffle) SPL1W 99.1dB
• Frequency response 80 - 5500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 46Hz
• Mechanical quality factor QMS 4.30
• Electrical quality factor QES 0.15
• Total quality factor QTS 0.14

Large signal parameters

• Maximum linear excursion xmax 3.5mm
• Air volume displaced at xmax VD 186cm³
• Power handling P 450W
• Program power Pmax 700W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.9Ω
• Inductance (1kHz) LE 1.17mH
• VC Diameter 75mm
• Winding material Aluminum

Magnet

• Force factor Bl 24N/A
• Motor constant Bl/√RE 9.88N/√W
• Material Neodymium

Diaphragm

• Effective diameter 260mm
• Effective area SD 531cm²
• Moving mass MMS 49g
• Moving mass (without air load) MMD 40.2g
• Material Weather protected

Suspensions

• Stiffness KMS 4.1N/mm
• Compliance CMS 244µm/N
• Equivalent volume to the compliance VAS 94.4L
• Mechanical resistance RMS 3.29N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 315mm
• Baffle cutout diameter 282mm
• Overall depth 124mm
• Flange thickness 11mm
• Mounting depth 113mm
• Volume occupied by the driver (estimated) 1.8L
• Net weight 3.9kg