I've installed an entire CDT system in a friend's car. We used that line of 3-ways (tweeter, 4", crossovers) but swapped in the EuroSport line 6" mids. It sounded good, but didn't live up to my expectations from all the hype. In other words, it didn't blow me away like I expected. I think there's other speakers out there that offer comparable sound quality for a comparable (if not less) price. For example...I personally have the CPe line of Crystal componenets and think they sound just as good. Not to mention I got them on sale for only $115 on Sounddomain.....they've since gone back up though.

My friend doesn't live down here for you to take a listen, but he does have a website where you can see his equipment and install I did. Check it out..... http://www.sounddomain.com/id/wallyfingeredmx6