Eighteen Sound 12NLW9300

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.3dB
• Frequency response 45 - 3200Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 47Hz
• Mechanical quality factor QMS 5.50
• Electrical quality factor QES 0.45
• Total quality factor QTS 0.42

Large signal parameters

• Maximum linear excursion xmax 8mm
• Air volume displaced at xmax VD 425cm³
• Power handling P 800W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 4.7Ω
• Inductance (1kHz) LE 0.53mH
• VC Diameter 100mm
• Winding material Aluminum

Magnet

• Force factor Bl 17N/A
• Motor constant Bl/√RE 7.84N/√W
• Material Neodymium

Diaphragm

• Effective diameter 260mm
• Effective area SD 531cm²
• Moving mass MMS 82g
• Moving mass (without air load) MMD 73.2g
• Material Water,UV repellent

Suspensions

• Stiffness KMS 7.14N/mm
• Compliance CMS 140µm/N
• Equivalent volume to the compliance VAS 56L
• Mechanical resistance RMS 4.4N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 315mm
• Baffle cutout diameter 282mm
• Overall depth 153mm
• Flange thickness 17mm
• Mounting depth 136mm
• Volume occupied by the driver (estimated) 2.9L
• Net weight 6.2kg