Eighteen Sound 15LW2400 8Ω

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95dB
• Frequency response 40 - 2200Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 40Hz
• Mechanical quality factor QMS 4.75
• Electrical quality factor QES 0.32
• Total quality factor QTS 0.30

Large signal parameters

• Maximum linear excursion xmax 10mm
• Air volume displaced at xmax VD 850cm³
• Power handling P 1200W
• Program power Pmax 2400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.3Ω
• Inductance (1kHz) LE 1.25mH
• VC Diameter 100mm
• Winding material Copper

Magnet

• Force factor Bl 24N/A
• Motor constant Bl/√RE 10.4N/√W
• Material Ferrite

Diaphragm

• Effective diameter 329mm
• Effective area SD 850cm²
• Moving mass MMS 138g
• Moving mass (without air load) MMD 121g
• Material Weather protected

Suspensions

• Stiffness KMS 8.7N/mm
• Compliance CMS 115µm/N
• Equivalent volume to the compliance VAS 131L
• Mechanical resistance RMS 7.3N·s/m

Dimensions

• Nominal diameter 15″
• 380mm
• Overall diameter 393mm
• Baffle cutout diameter 354mm
• Overall depth 181mm
• Flange thickness 12mm
• Mounting depth 169mm
• Volume occupied by the driver (estimated) 5.4L
• Net weight 11.2kg