TypeLow/Mid-RangeNominal Diameter15 ", 381 mmVoice Coil3 ", 77 mmOverall diameter388 mmPitch Circle Diameter371 mmCut- out Measurement358 mmMounting holes8Diameter of fixing holes7 x 8 mmDepth174 mmNominal Impedance8 Ohm(s)Nominal Load Capacity500 Wmaximum rated load1000 WSensitivity (1 W / 1 m)98 dBFrequency response35 2500 HzVoice Coil MaterialcopperMagnetNeodymiumDepth of the magnetic gap8 mmThiele & Small ParameterFs (Resonance Frequency)40 HzRe (DC resistance)5.9 Ohm(s)Qms (mechanical quality)6.1Le (inductance of the voice coil)1.28 mHQes (electrical quality)0.33Qts (overall quality)0.31Vas (equivalent volume)144.8Mms (moving mass)11.5 gBL (power factor)22.9 T/mXmax (maximum displacement)± 5.5 mmCms (elasticity of the suspension)0.14 mm/NSd (membrane area)880 cm2Weight3,65 kg