I bought these because I used to use Cerwin Vega Stage speakers with my band PA system and was very impressed with the quality and sound. I was pleased to find these small car speakers are every bit as nice even though they are only hooked up to my stock Saturn stereo. These things added a major kick to the sound to the point that I have friends asking "where I put the sub bass ?" ( I don't have 1 LOL) the sound is full rich deep and clear with warm Mids, crisp Highs and a thump you can feel! I used 2 sets with the co-ax pair in the rear deck and the tri-ax pair in the front doors.
Pros; they sound killer and are obviously built to last!
Cons; they came with some lead wires that were so skinny I would not use them even with my stock radio.......oh well no big deal