Description
Eighteen Sound 18ND9300
18″ / 460 mm
Nominal diameter
30 Hz
Resonance
0.28
Q factor
96 dB
Sensitivity
± 9.5 mm
Linear excursion
1400 W
Program Power
Sensitivity (1W, 1m, infinite baffle)SPL1W95.7dBFrequency response28 - 2500Hz
Thiele & Small parameters
Resonance frequency (free air)fS30.0HzMechanical quality factorQMS7.86 Electrical quality factorQES0.29 Total quality factorQTS0.28Large signal parameters
Maximum linear excursionxmax9.5mmMaximum excursion before damagexlim25.0mmAir volume displaced at xmaxVD1159cm³Power handlingP1000WProgram powerPmax1400WVoice Coil
Nominal impedanceZ8ΩDC resistanceRE5.0ΩInductance (1kHz)LE2.02mHVC Diameter100mmWinding materialCopper
Magnet
Force factorBl24.4N/AMotor constantBl/√RE10.9N/√WMaterialNeodymium
Diaphragm
Effective diameter394mmEffective areaSD1220cm²Moving massMMS184gMoving mass (without air load)MMD154.4gMaterialStraight ribbed carbon fiber loaded cellulose
Suspensions
StiffnessKMS6.67N/mmComplianceCMS150µm/NEquivalent volume to the complianceVAS316LMechanical resistanceRMS4.41N·s/mSurround materialTriple roll, Polycotton
Dimensions
Nominal diameter18″460mmOverall diameter462mmBaffle cutout diameter422mmOverall depth224mmFlange thickness26mmMounting depth198mmVolume occupied by the driver (estimated)5.3LNet weight7.6kgRelated Products
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