Summary: These are my first Polk speakers and I'm very happy with them. I'm used to Alpine Type R components, which are substantially more expensive, but the Type Rs wouldn't fit in my new car. These Polks do not disappoint though. I've heard that Polks don't have the crisp highs you get from Alpine or Infinity, but I find these speakers to be very well defined. I'm also impressed with the bass response given that they are only 5.25.
Summary: These speakers have a very good build quality and sound excellent, only downside is the crossovers are a little large so it took some time to find a decent mounting position for them but after that installation was an ease
Summary: This is the second vehicle I've installed these speakers into. Very easy to install and sound outstanding compared to factory speakers. With a good amp and bass speaker these are all the speakers you'll need, short of turning your auto into a $50,000 sound studio,
Pros: Easy install and good sound
Cons: Instructions with the speakers are a waste. If you don't know how to swap speakers, the included instructions will not help.
Summary: I got this speaker system because I was unhappy with the Kenwoods in the doors of my Ranger. After having installed the Polks, the difference is night and day. The tweeters really make up the difference in the highs. I videoed some music while playing and the playback sounds like a concert hall. I have them paired with Bose shelf speakers for the rear and they truly carry the bass well.
Pros: Very clear Great adapter. Glad it was part of the package.
Cons: Couldve used a larger speaker that couldve been identified inside the shopping but, I couldve looked too.