Product typeLoudspeaker ChassisTypePANominal Diameter12 ", 304.8 mmVoice Coil2.5 ", 63.5 mmOverall diameter314.5 mmPitch Circle Diameter295.1 mmCut- out Measurement280.9 mmDiameter of fixing holes7 mmDepth154 mmNominal Impedance4 Ohm(s)Nominal Load Capacity250 Wmaximum rated load500 WSensitivity (1 W / 1 m)99.9 dBFrequency response48 - 4000 HzVoice Coil MaterialAluminumMagnetNeodymiumDepth of the magnetic gap7 mmThiele & Small ParameterFs (Resonance Frequency)37 HzRe (DC resistance)5.04 Ohm(s)Qms (mechanical quality)3.13Le (inductance of the voice coil)0.46 mHQes (electrical quality)0.44Qts (overall quality)0.39Vas (equivalent volume)147Mms (moving mass)49 gBL (power factor)11.3 T/mXmax (maximum displacement)4.9 mmCms (elasticity of the suspension)0.38 mm/NSd (membrane area)519.5 cm2Weight2,599 kg
