Product typeLoudspeaker ChassisTypePANominal Diameter18 ", 460 mmVoice Coil4 ", 100 mmOverall diameter460 mmPitch Circle Diameter440 mmCut- out Measurement422 mmMounting holes8Diameter of fixing holes6 mmDepth215 mmNominal Impedance8 Ohm(s)Nominal Load Capacity1200 Wmaximum rated load2400 WSensitivity (1 W / 1 m)98 dBFrequency response35 - 1600 HzVoice Coil MaterialcopperMagnetNeodymiumDepth of the magnetic gap12 mmThiele & Small ParameterFs (Resonance Frequency)35 HzRe (DC resistance)5 Ohm(s)Qms (mechanical quality)11.1Le (inductance of the voice coil)1.26 mHQes (electrical quality)0.38Qts (overall quality)0.37Vas (equivalent volume)171.2, 175Mms (moving mass)211.8 gBL (power factor)24.8 T/mXmax (maximum displacement)12.45 mmCms (elasticity of the suspension)0.1 mm/NSd (membrane area)1124 cm2Rms (mechanical loss resistance)4.19 kg/sWeight7,3 kg