Product typeLoudspeaker ChassisTypePANominal Diameter18 ", 457.2 mmVoice Coil4 ", 101.6 mmOverall diameter457.2 mmPitch Circle Diameter438.2 mmCut- out Measurement420.5 mmDiameter of fixing holes7.1 mmDepth207 mmNominal Impedance8 Ohm(s)Nominal Load Capacity800 Wmaximum rated load1600 WSensitivity (1 W / 1 m)97 dBFrequency response40 - 800 HzVoice Coil MaterialcopperMagnetFerriteDepth of the magnetic gap9.53 mmThiele & Small ParameterFs (Resonance Frequency)25 HzRe (DC resistance)5.2 Ohm(s)Qms (mechanical quality)8.18Le (inductance of the voice coil)1.67 mHQes (electrical quality)0.32Qts (overall quality)0.31Vas (equivalent volume)548.7Mms (moving mass)138 gBL (power factor)18.8 T/mXmax (maximum displacement)4.8 mmCms (elasticity of the suspension)0.29 mm/NSd (membrane area)1159 cm2Weight12,14 kg
