The factory speakers were replaced with these ones with the same factory source. Okay, miracles didn't happen but the sound, the bass, and the treble became livelier. The whole acoustics gained "color". Up to maybe 2/3 of the volume is okay, after that they start to distort because obviously they need more power but they don't have it.... I placed the tweeters in a strategic point and they are enjoyable. They have pretty good clarity and cleanliness. I imagine that with an amplifier they will soar. I am thinking of replacing the rear ones with the same ones in two-way or three-way, since there are no positions for separates like in the front.