Eighteen Sound 15LW2400

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.5dB
• Frequency response 40 - 2200Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 34Hz
• Mechanical quality factor QMS 4.20
• Electrical quality factor QES 0.24
• Total quality factor QTS 0.23

Large signal parameters

• Maximum linear excursion xmax 9.5mm
• Air volume displaced at xmax VD 808cm³
• Power handling P 1200W
• Program power Pmax 2400W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 2.7Ω
• Inductance (1kHz) LE 0.79mH
• VC Diameter 100mm
• Winding material Copper

Magnet

• Force factor Bl 18N/A
• Motor constant Bl/√RE 11N/√W
• Material Ferrite

Diaphragm

• Effective diameter 329mm
• Effective area SD 850cm²
• Moving mass MMS 135g
• Moving mass (without air load) MMD 118g

Suspensions

• Stiffness KMS 6.17N/mm
• Compliance CMS 162µm/N
• Equivalent volume to the compliance VAS 191L
• Mechanical resistance RMS 6.87N·s/m
• Spider material Double Silicon

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