Speaker Size (In): 4 Tweeter Size (MM): 20 Watts RMS: 50 Watts Peak: 175 Impedance: S3 VCD (MM): 25 Frequency Response (Hz): 90 – 20k dBSPL: 86 Mounting Diameter (In): 3.7 Mounting Diameter (MM): 93 Mounting Depth (In): 1.7 Mounting Depth (MM): 43