TypeguitarNominal Diameter15 ", 381 mmVoice Coil3 ", 76.2 mmOverall diameter389.1 mmPitch Circle Diameter369.8 mmCut- out Measurement356.4 mmDiameter of fixing holes7 mmDepth173 mmNominal Impedance4 Ohm(s)Nominal Load Capacity300 WSensitivity (1 W / 1 m)100.2 dBFrequency response42 - 2900 HzVoice Coil MaterialcopperMagnetNeodymiumDepth of the magnetic gap9.27 mmThiele & Small ParameterFs (Resonance Frequency)42 HzRe (DC resistance)3.57 Ohm(s)Qms (mechanical quality)14.41Le (inductance of the voice coil)0.53 mHQes (electrical quality)0.32Qts (overall quality)0.31Vas (equivalent volume)188.4Mms (moving mass)79.9 gBL (power factor)15.28 T/mXmax (maximum displacement)3.3 mmCms (elasticity of the suspension)0.18 mm/NSd (membrane area)864.6 cm2Weight4,58 kg