Product typeLoudspeaker ChassisTypePANominal Diameter18 ", 457.2 mmVoice Coil3 ", 76.2 mmOverall diameter457.2 mmPitch Circle Diameter438.2 mmCut- out Measurement420.5 mmDiameter of fixing holes7.1 mmDepth207 mmNominal Impedance8 Ohm(s)Nominal Load Capacity650 Wmaximum rated load1300 WSensitivity (1 W / 1 m)99 dBFrequency response41 - 2400 HzVoice Coil MaterialcopperMagnetFerriteDepth of the magnetic gap9.53 mmThiele & Small ParameterFs (Resonance Frequency)28 HzRe (DC resistance)6.29 Ohm(s)Qms (mechanical quality)8.28Le (inductance of the voice coil)1.9 mHQes (electrical quality)0.3Qts (overall quality)0.29Vas (equivalent volume)441.2Mms (moving mass)130 gBL (power factor)22.1 T/mXmax (maximum displacement)6.1 mmCms (elasticity of the suspension)0.24 mm/NSd (membrane area)1140 cm2Weight11,685 kg
