I installed this on
Honda Civic

Review
I had almost a good sound system, until I realized that the dispersion of the music was quite bad. I went online to search for recommendations; some suggested that I strategically relocate where my speakers are, others suggested I look around for coaxial speakers. I then went to my relative's shop who sells in-car entertainment products, and asks for his recommendation on the coaxial speakers, since I wouldn't want to spend a bomb relocating. He suggested I get this Scosche EFX P522 for he had gotten a lot of good feedback from customers who bought this. I went ahead to get them, and I do agree with the other customers. I now feel every single corner and edge of the car has been 'enlightened' with my delightful music.

What I like
I love how it had distributed and dispersed the music more evenly throughout my car.

What I do not like
It may cost a little expensive.