Product typeLoudspeaker ChassisTypePANominal Diameter18 ", 457.2 mmVoice Coil4 ", 101.6 mmOverall diameter458 mmPitch Circle Diameter440 mmCut- out Measurement412 mmMounting holes8Diameter of fixing holes8.5 mmDepth250 mmNominal Impedance4 Ohm(s)Nominal Load Capacity1500 Wmaximum rated load3000 WSensitivity (1 W / 1 m)95 dBFrequency response20 - 200 HzVoice Coil MaterialcopperMagnetNeodymiumDepth of the magnetic gap12 mmThiele & Small ParameterFs (Resonance Frequency)24.85 HzRe (DC resistance)57 Ohm(s)Qms (mechanical quality)5.33Le (inductance of the voice coil)0.81 mHQes (electrical quality)0.4Qts (overall quality)0.37Vas (equivalent volume)304Mms (moving mass)27.7 gBL (power factor)24.93 T/mXmax (maximum displacement)-19 mmCms (elasticity of the suspension)0.148 mm/NSd (membrane area)1213 cm2Weight9,8 kg
