Eighteen Sound 12W750 16Ω

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.1dB
• Frequency response 50 - 4600Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 55Hz
• Mechanical quality factor QMS 5.80
• Electrical quality factor QES 0.35
• Total quality factor QTS 0.33

Large signal parameters

• Maximum linear excursion xmax 8mm
• Air volume displaced at xmax VD 425cm³
• Power handling P 600W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 16Ω
• DC resistance RE 10.4Ω
• Inductance (1kHz) LE 1.2mH
• VC Diameter 75mm
• Winding height HVC 21mm
• Winding material Aluminum

Magnet

• Force factor Bl 23.5N/A
• Motor constant Bl/√RE 7.29N/√W
• Air gap height HAG 10mm
• Material Ferrite

Diaphragm

• Effective diameter 260mm
• Effective area SD 531cm²
• Moving mass MMS 55g
• Moving mass (without air load) MMD 46.4g
• Material Weather protected

Suspensions

• Stiffness KMS 6.58N/mm
• Compliance CMS 152µm/N
• Equivalent volume to the compliance VAS 61L
• Mechanical resistance RMS 3.28N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 310mm
• Baffle cutout diameter 280mm
• Overall depth 148mm
• Flange thickness 11mm
• Mounting depth 137mm
• Volume occupied by the driver (estimated) 3.1L
• Net weight 7.5kg