Product typeLoudspeaker ChassisTypeGuitarsNominal Diameter12 ", 304.8 mmVoice Coil1.75 ", 44.5 mmOverall diameter305.5 mmPitch Circle Diameter294.3 mmCut- out Measurement278.1 mmDiameter of fixing holes6.4 mmDepth166.6 mmNominal Impedance8 Ohm(s)Nominal Load Capacity75 WSensitivity (1 W / 1 m)100 dBFrequency response75 - 5.200 HzVoice Coil MaterialcopperMagnetFerriteDepth of the magnetic gap7.92 mmThiele & Small ParameterFs (Resonance Frequency)82.45 HzRe (DC resistance)5.99 Ohm(s)Qms (mechanical quality)16.77Le (inductance of the voice coil)0.48 mHQes (electrical quality)1.17Qts (overall quality)1.09Vas (equivalent volume)48.71Mms (moving mass)28.5 gBL (power factor)8.71 T/mXmax (maximum displacement)0.47 mmCms (elasticity of the suspension)0.13 mm/NSd (membrane area)519.5 cm2Weight4,252 kg