PowerBass S-462 4 x 6-Inch Coaxial 2-Way Speaker Set (Pair) Hard to fit 4x10" size is original replacement for many older GM sedans and SUV's 0.75" pure silk dome tweeter and woofer with DDC coating 150 Watts peak power handling frequency response 58Hz - 20Khz 4-Ohm nominal impedance Mounting depth 2.375 inch mounting depth Includes speaker wire mounting hardware application guide PowerBass decal Metal ring is included for mounting standard 4x6-Inch Su or metric locations 4-Ohm Nominal impedance 86db efficiency 2 4x6-Inch 2-way speakers Mounting depth 2.125 inches driver cutout 3x6.125 inches DDC treated paper cone woofer pure silk dome tweeter