Has anyone ever replaced their door speakers? I measured them at 4.75" and I'm not having any luck finding any online. My driver side speakers cuts in out sometimes so I have been wanting to replace both of them.

 

2 wires very easy I put dual brand 6" coaxial or dual cones idr which in my doors they sound great there water proof and heat proof aswell and only 25 bucks a pair at autozone and they have them in all sorts of sizes from 3" to 16"subs
I also have a dual 250watt stereo

 

In my 78, I cut out holes for bigger speakers..

 

I have 5.25" 3-way speakers installed in the lower section of my doors. There are 5.25" speakers available that are slim and will fit in the stock door location. Check out Crutchfield on the WEB.