Conclusion: You won't be disappointed with these. I had replaced my Boston Acoustics with these, my cheaper I thought I wouldn't get the same performance. They are better, glad I bought them. The only grip I have is the size of the tweeter housing and the lack of assembly if you wanted to dashmount from the bottom, they are huge but the perk of being able to direct them once they're installed is a nice feature I put them in a Ford F350 Crew Cab, fronts and rears.
Conclusion: I have a 1999 Oldsmobile Intrigue with the stock stereo and speakers. I purchased and installed the following Alpine components: CDE-W235BT Head Unit SPR-50C Front Component Speakers SPR-69 Type-R Rear Speakers KTP-445A Power Pack Metra 70-2001 Wire Harness Metra 95-2001 Double DIN Installation Dash Kit Installation was easy and the sound is incredible. The shipping is very fast and customer support is awesome. Thanks Sonic!
Summary: Maybe it's the Alpine PDX-V9 amp I got to power my system, but something just isn't delivering the punch I had hoped for. While the sound is quality, I was really hoping for a more powerful system.
Conclusion: You will not be disappointed with these speakers. The sound quality is far and beyond what my oem speakers did for me. The only problem I had is I can't roll my windows down anymore because the speaker is so deep. However, this was a bit of poor planning on my part. Just be sure that they'll fit in your car.
Summary: These speakers pack quite a punch for being only 5.25". These speakers have crisp sound and a lot of bass. I have it installed in a 2005 Accord EX and it makes my rear-view mirror shake (no sub installed). These speakers are well worth the money as I am only putting ~50 watts rms to each along with the spr69. These speakers are true quality loud speakers as I've owned eminence, selenium, american bass, etc.
Pros: Very light, crisp, loads of bass.
Cons: makes my doors shake violently even when turned down, dynamat may be the solution.