Product typeLoudspeaker ChassisTypePANominal Diameter12 ", 300 mmVoice Coil4 ", 100 mmOverall diameter316 mmPitch Circle Diameter298.5 mmCut- out Measurement282 mmMounting holes8Diameter of fixing holes6.5 mmDepth169 mmNominal Impedance4 Ohm(s)Nominal Load Capacity1000 Wmaximum rated load2000 WSensitivity (1 W / 1 m)95 dBFrequency response45 - 2500 HzVoice Coil MaterialcopperMagnetNeodymiumDepth of the magnetic gap12 mmThiele & Small ParameterFs (Resonance Frequency)45 HzRe (DC resistance)2.9 Ohm(s)Qms (mechanical quality)0.26Le (inductance of the voice coil)1.13 mHQes (electrical quality)0.26Qts (overall quality)0.26Vas (equivalent volume)28.15Mms (moving mass)138.7 gBL (power factor)20.7 T/mXmax (maximum displacement)12.45 mmCms (elasticity of the suspension)0.09 mm/NSd (membrane area)469 cm2Rms (mechanical loss resistance)3.24 kg/sWeight6,6 kg