TypeguitarNominal Diameter12 ", 304.8 mmVoice Coil1.75 ", 44.5 mmOverall diameter305.3 mmPitch Circle Diameter295.4 mmCut- out Measurement278.6 mmDiameter of fixing holes6.4 mmDepth130 mmNominal Impedance8 Ohm(s)Nominal Load Capacity50 WSensitivity (1 W / 1 m)101 dBFrequency response70 - 5000 HzVoice Coil MaterialcopperMagnetFerriteDepth of the magnetic gap7.92 mmThiele & Small ParameterFs (Resonance Frequency)96 HzRe (DC resistance)7.01 Ohm(s)Qms (mechanical quality)18.19Le (inductance of the voice coil)0.49 mHQes (electrical quality)0.72Qts (overall quality)0.69Vas (equivalent volume)33.7Mms (moving mass)31 gBL (power factor)13.5 T/mXmax (maximum displacement)1.2 mmCms (elasticity of the suspension)0.09 mm/NSd (membrane area)519.5 cm2Weight4,115 kg