... 3.crystal sound,good penetrating Line array speaker ML-120 is a three-way line array speaker, woofer units is 2x12 ", ... 2x2.5 ".And all speaker units of this line array adopt Neodynium speaker units.The operation frequency range is 70Hz ... Recommended Amplifiers700 to 1400Watts into 8ΩVertica coverageVaries, depending on array length and configurationLow/low-mid frequency LF 2X12″ cone NeodyniumNominal ...