Conclusion: 6 months ago, I purchased these, and a set of Powerbass S-522s for my 2000 Chrysler Voyager. I installed them myself with the help of some diagrams on the internet, and I've been bumpin tunes ever since. No issues with install, and they sound great. Acceptable amount of bass mated to my cheap 35w RMS Jensen DVD/iPod/CD/MP3 unit. Mids and Highs sound great, and have little to no distortion when cranked.
Conclusion: If your looking for stock replacements and don't want to spend money on the higher end brands, these are are great for the price . Not the greatest speakers but are better than stock and for aftermarket radios these are great for un amplified systems. They have lasted longer than my pioneer units and sound great.
Conclusion: I thought these would work out fine since I was already running 4 of the 6x8 powerbass s series as well as 2 of the 3.5, all of which sound great but these blew right after they were installed-both of them-only running 50 watts RMS. Don't know why these wouldn't hold up while the others do-only difference I can see is the tweeters. Wasted money. I would not recommend the 6x9 s series but the others are great.