Eighteen Sound 12LW800

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.8dB
• Frequency response 46 - 4200Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 52Hz
• Mechanical quality factor QMS 7.60
• Electrical quality factor QES 0.30
• Total quality factor QTS 0.29

Large signal parameters

• Maximum linear excursion xmax 6.5mm
• Air volume displaced at xmax VD 345cm³
• Power handling P 500W
• Program power Pmax 800W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 1.72mH
• VC Diameter 75mm
• Winding material Copper

Magnet

• Force factor Bl 21.3N/A
• Motor constant Bl/√RE 9N/√W
• Material Ferrite

Diaphragm

• Effective diameter 260mm
• Effective area SD 531cm²
• Moving mass MMS 76.5g
• Moving mass (without air load) MMD 67.7g
• Material Weather protected

Suspensions

• Stiffness KMS 8.2N/mm
• Compliance CMS 122µm/N
• Equivalent volume to the compliance VAS 48L
• Mechanical resistance RMS 3.29N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 315mm
• Baffle cutout diameter 282mm
• Overall depth 151mm
• Flange thickness 20mm
• Mounting depth 131mm
• Volume occupied by the driver (estimated) 3.4L
• Net weight 8.1kg