Eighteen Sound 15LW2400

• Sensitivity (1W, 1m, infinite baffle)SPL1W95.5dB
• Frequency response40 - 2200Hz

Thiele & Small parameters

• Resonance frequency (free air)fS34Hz
• Mechanical quality factorQMS4.20
• Electrical quality factorQES0.24
• Total quality factorQTS0.23

Large signal parameters

• Maximum linear excursionxmax9.5mm
• Air volume displaced at xmaxVD808cm³
• Power handlingP1200W
• Program powerPmax2400W

Voice Coil

• Nominal impedanceZ4Ω
• DC resistanceRE2.7Ω
• Inductance (1kHz)LE0.79mH
• VC Diameter100mm
• Winding materialCopper

Magnet

• Force factorBl18N/A
• Motor constantBl/√RE11N/√W
• MaterialFerrite

Diaphragm

• Effective diameter329mm
• Effective areaSD850cm²
• Moving massMMS135g
• Moving mass (without air load)MMD118g

Suspensions

• StiffnessKMS6.17N/mm
• ComplianceCMS162µm/N
• Equivalent volume to the complianceVAS191L
• Mechanical resistanceRMS6.87N·s/m
• Spider materialDouble Silicon

Dimensions

• Nominal diameter15″
• 380mm
• Overall diameter393mm
• Baffle cutout diameter354mm
• Overall depth181mm
• Flange thickness12mm
• Mounting depth169mm
• Volume occupied by the driver (estimated)5.4L
• Net weight11.2kg