DCX 87.3 - Hertz 3" 2-Way 60W RMS DIECI Series Coaxial Speakers DCX 87.3 - Hertz 3" 2-Way 60W Max DIECI Series Coaxial Speakers Power Handling: 30 Watts RMS | 60 Watts Peak Power 4 Ohm Impedence Large motor assembly for mobile voice coil control. Mounting Depth: 1.3"