I ordered these for an installation in a 2014 Ford Focus. As a young audiophile and music producer, I was displeased with the sound quality from the stock radio receiver. The first step in my sound-improvement process was to get some NVX speakers installed, since I've heard such great stories about NVX products (plus the price is reasonable).
I had these installed and the sound quality is very clear. The mids are clearly present, and the highs are crystal clear. That being said, I had to manually turn down the trebble on the stock radio receiver since the tweeters are very BRIGHT. If they are left unadjusted, prepare yourself for a headache. If they are properly adjusted, they sound super clear. The lows are present, as I do have these speakers on a 4channel Belva amp. Present, not powerful. (but I have subs to provide that power)
All in all these speakers are great. For a good price, I get clear sound that is almost on par with my home studio set up. 8.5 out of 10. Not a perfect 10 because of the tweeter thing, but it is not a big enough deal for me to not recommend these speakers. Buy them!!