Eighteen Sound 12W600

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.6dB
• Frequency response 48 - 3700Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 50Hz
• Mechanical quality factor QMS 5.87
• Electrical quality factor QES 0.32
• Total quality factor QTS 0.30

Large signal parameters

• Maximum linear excursion xmax 6.5mm
• Maximum excursion before damage xlim 17mm
• Air volume displaced at xmax VD 345cm³
• Power handling P 450W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.5Ω
• Inductance (1kHz) LE 1.85mH
• VC Diameter 75mm
• Winding material Aluminum

Magnet

• Force factor Bl 17.3N/A
• Motor constant Bl/√RE 7.38N/√W
• Material Ferrite

Diaphragm

• Effective diameter 260mm
• Effective area SD 531cm²
• Moving mass MMS 55g
• Moving mass (without air load) MMD 46.2g

Suspensions

• Stiffness KMS 5.46N/mm
• Compliance CMS 183µm/N
• Equivalent volume to the compliance VAS 73L
• Mechanical resistance RMS 2.94N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 316mm
• Baffle cutout diameter 282mm
• Overall depth 134mm
• Flange thickness 12mm
• Mounting depth 122mm
• Volume occupied by the driver (estimated) 2.5L
• Net weight 5.7kg