I’m following this thread because I’m in the same boat. I think that without adding an amp the speakers won’t sound a whole lot better than stock.
A 4-channel 50-90 watt RMS amp will be 200-600 depending on which one you get.
I added Sound deanening to all four doors last week and that made the stock door speakers sound much better all by itself. That was less than $100 as a DIY project and took me about an hour per door.
The real issue after deciding to get the amp is how to get the signal to the amp and is that signal any good. I’m stuck at this question currently. I can’t tell if the spend will be worth the improvement as someone mentioned upthread.
