Product typeLoudspeaker ChassisTypeGuitarsNominal Diameter12 ", 304.8 mmVoice Coil1.75 ", 44.5 mmOverall diameter305.3 mmPitch Circle Diameter295.4 mmCut- out Measurement278.6 mmDiameter of fixing holes6.4 mmDepth132 mmNominal Impedance8 Ohm(s)Nominal Load Capacity75 WSensitivity (1 W / 1 m)103 dBFrequency response70 - 5500lx @ 1m HzVoice Coil MaterialcopperMagnetFerriteDepth of the magnetic gap7.92 mmThiele & Small ParameterFs (Resonance Frequency)89 HzRe (DC resistance)6.13 Ohm(s)Qms (mechanical quality)11.48Le (inductance of the voice coil)0.38 mHQes (electrical quality)0.49Qts (overall quality)0.47Vas (equivalent volume)41.5Mms (moving mass)30 gBL (power factor)14.4 T/mXmax (maximum displacement)0.8 mmCms (elasticity of the suspension)0.11 mm/NSd (membrane area)519.5 cm2Weight5,372 kg