Eighteen Sound 12W750 8Ω

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96dB
• Frequency response 50 - 4600Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 49Hz
• Mechanical quality factor QMS 7.00
• Electrical quality factor QES 0.30
• Total quality factor QTS 0.28

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 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 0.95mH
• VC Diameter 75mm
• Winding material Aluminum

Magnet

• Force factor Bl 18N/A
• Motor constant Bl/√RE 7.89N/√W
• Material Ferrite

Diaphragm

• Effective diameter 260mm
• Effective area SD 531cm²
• Moving mass MMS 57g
• Moving mass (without air load) MMD 48.4g
• Material Weather protected

Suspensions

• Stiffness KMS 5.41N/mm
• Compliance CMS 185µm/N
• Equivalent volume to the compliance VAS 73L
• Mechanical resistance RMS 2.51N·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