Summary: These are excellent speakers. They have good clarity and they are efficient. I installed then in my dash being powered by the factory radio. Since I have a six plus sub setup I did not need or expect any bass out of them, I you need some mid bass I suggest you look at component speakers. If you have larger speakers providing bass, you will love the midrange and highs from these speakers.
Summary: These are great upgrades. I put them in my 06 Chevy 2500HD. Installation was easy, especially using the included instructions and adaptors. Crutchfield is great for supplying expertise and hardware and still keeping their prices within a couple of dollars of other online sellers that don't have detailed instructions or a technical line to call. These Sonys deliver crisp midrange and highs. Low end is adequate and as expected for a small speaker.
Pros: Good sound at a good price. Definite upgrade over the OEM speakers.
Summary: Replaced the original factory speakers in a 1999 Chev Blazer. The new speakers included all necessary hardware, instructions and wiring adapters and were a breeze to install. The sound quality of the new speakers is like night/day compared to the OEM speakers - should have done this upgrade years ago. Ended up replacing all four OEM speakers.