Eighteen Sound 15LW1500

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.9dB
• Frequency response 40 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 34Hz
• Mechanical quality factor QMS 11.50
• Electrical quality factor QES 0.29
• Total quality factor QTS 0.28

Large signal parameters

• Maximum linear excursion xmax 9mm
• Air volume displaced at xmax VD 765cm³
• Power handling P 1000W
• Program power Pmax 1400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.0Ω
• Inductance (1kHz) LE 2.4mH
• VC Diameter 100mm
• Winding material Copper

Magnet

• Force factor Bl 22.1N/A
• Motor constant Bl/√RE 9.88N/√W
• Material Ferrite

Diaphragm

• Effective diameter 329mm
• Effective area SD 850cm²
• Moving mass MMS 130g
• Moving mass (without air load) MMD 113g
• Material Weather protected

Suspensions

• Stiffness KMS 5.92N/mm
• Compliance CMS 169µm/N
• Equivalent volume to the compliance VAS 195L
• Mechanical resistance RMS 2.41N·s/m

Dimensions

• Nominal diameter 15″
• 380mm
• Overall diameter 387mm
• Baffle cutout diameter 353mm
• Overall depth 165mm
• Flange thickness 24mm
• Mounting depth 141mm
• Volume occupied by the driver (estimated) 5.3L
• Net weight 12.4kg