Product typeLoudspeaker ChassisTypePANominal Diameter12 ", 305 mmVoice Coil2.5 ", 64 mmOverall diameter314.5 mmPitch Circle Diameter293.9 mmCut- out Measurement281.2 mmMounting holes8Diameter of fixing holes6.9 mmDepth139.7 mmNominal Impedance8 Ohm(s)Nominal Load Capacity375 WSensitivity (1 W / 1 m)99.8 dBFrequency response44 - 4000 HzVoice Coil MaterialAluminumMagnetFerriteDepth of the magnetic gap7.9 mmThiele & Small ParameterFs (Resonance Frequency)44 HzRe (DC resistance)5.04 Ohm(s)Qms (mechanical quality)7.59Le (inductance of the voice coil)0.54 mHQes (electrical quality)0.39Qts (overall quality)0.37Vas (equivalent volume)141.66Mms (moving mass)36 gBL (power factor)11.47 T/mXmax (maximum displacement)5.1 mmCms (elasticity of the suspension)0.36 mm/NSd (membrane area)532.4 cm2Weight5,779 kg