Pros:They *might* be better then the factory 4x10 but I don't know.
Cons:THey weren't as good as cheap Jenson 4" that they were to replace.
The Bottom Line: Make sure you can return them if you decide you don't like them. Do one first and then compare it to the other old one.
I wanted to replace the speakers in my S-10 pickup to get better sound. I had previously removed the rear factory 4x10s and made an adapter to mount some 4" round speakers in their place. Never expected to get great sound from the 4" speakers but I had them sitting around and stuck them in. After a year I decided to replace all the speakers. Replaced the factory front 4x6's with some Pioneer ts-a4657 2-ways. Made a big diff. So I decided to go ahead and replace those little 4" ones in the back with some REAL speakers. If you are looking at this review, you know there are not a whole lot of 4x10s to choose from. I've always had good luck with Pioneer speakers so I bought the only model 4x10 they still make, the TS-A4103 . I put the first one in and turned on the cd player and adjusted the fader to rear only and then faded it from side to side to compare my new 4x10 to the old 4" round that was still on the other side.
Hmmm, are my ears deceiving me?? When I fade to the new 4103 the bass goes DOWN!!! And the highs are no better then what I get from the little 4" one still on the other channel. I fade it back and forth and try several different songs and it's always the same, the new TS-A4103 sounds WORSE then the Jenson 4" round that was a throwaway that came free with a stereo. Mighty disappointing. I took the 4x10 out and put the 4" back in and will be returning the TS-A4103's. I wish I could compare them to the factory 4x10's but I can't. Maybe they are better then the factory speakers but they were sure a disappointment compared to those little 4" ones that put out more sound and more bass.