little update. So I installed my Kicker KS coaxials in the dash and rear cab last year and was happy with their sound on some types of music but not as much with other types. I had road volume set to 2, bass boost off, and the EQ tuned to what sounded good to me at lower volume settings.
Knowing that I was going to keep these speakers powered off of the stock HU when I added a powered subwoofer and component speakers, I decided to turn road volume off, bass boost off, and set the EQ to flat to see what would happen.
What a difference! Every type of music sounds good now! This was a night and day change to my ears. The lower volumes are not as loud as before but the clarity of the music is much much better and I can use all of my volume now, where as before I maxed out at around 25-27. This was also a concern because I didn't want my stock powered speakers distorting before the amplified speakers did at higher listening volumes.
What a great zero dollar upgrade this turned out to be!