It concerns the 5.25. Overall, very natural sound and very sensitive speakers (they play louder with the same power compared to other speakers, especially factory ones). The tweeters are quite stronger than I would like and they squeak a bit at the highs. With EQ, it smooths out if you cut a bit around 4k Hz. In terms of bass, they don't have much like most in their size; for 100 Hz and below, they don't perform well, a subwoofer is needed or better place them in the back seats if possible. For someone who just wants to install them and forget about them, I would only recommend them for low volumes where the squeaking is not very noticeable; otherwise, they are a decent choice for their price. The diagram below is at the side ears of the box as soon as you open it. I'm uploading it here because I couldn't find it anywhere before I bought them.