Speaker Size (In): 1 Watts RMS: 50 Watts Peak: 100 Impedance: S4 VCD (In): 1 Frequency Response (Hz): 3.5k – 20k dBSPL: 104 Mounting Diameter (In): 1.8 Mounting Diameter (MM): 45 Mounting Depth (In): 1.4 Mounting Depth (MM): 34