I'm going to upgrade the speakers in my truck. The only ones I have left are the ones in the back. Two 5x7's. I found these on Crutchfield but I don't know a whole lot about how to judge speakers or what to look for/ avoid. Any help would be great.
http://www.crutchfield.com/p_158GT5738F/Sony-XS-GT5738F.html?tp=93#overview-tab
you should try to match the source's max WATT with the RMS wattage of the speaker.
which head unit do you have ? are you using amps? Some good car speakers, are Rockford fostgate, JBL, Herz, Pioneer. Kicker., Mtx, Bose.
Kicker makes a good entry level car speaker that can be amp powered or run off a head unit. They are cheap and extremely durable. I highly recommend you check out kicker.