Product typeLoudspeaker ChassisTypePANominal Diameter12 ", 304.8 mmVoice Coil2.5 ", 63.5 mmOverall diameter312.8 mmPitch Circle Diameter299 mmCut- out Measurement278.9 mmDiameter of fixing holes6.6 mmDepth164 mmNominal Impedance6 Ohm(s)Nominal Load Capacity400 Wmaximum rated load800 WSensitivity (1 W / 1 m)89.2 dBFrequency response25 - 125 HzVoice Coil MaterialcopperMagnetFerriteDepth of the magnetic gap9.53 mmThiele & Small ParameterFs (Resonance Frequency)22 HzRe (DC resistance)4.29 Ohm(s)Qms (mechanical quality)13.32Le (inductance of the voice coil)1.48 mHQes (electrical quality)0.39Qts (overall quality)0.38Vas (equivalent volume)125.2Mms (moving mass)146 gBL (power factor)15 T/mXmax (maximum displacement)13 mmCms (elasticity of the suspension)0.35 mm/NSd (membrane area)506.7 cm2Weight10,153 kg