Stock Audi Sound System setup

Hi Lurch, if the stock front channel going by the speakers' max watt, it's 50W max channel with the tweeter getting 10W max and the bass getting 40W max correct? So if I replace the tweeter and add the mid and run them in series and the bass in parallel, I will have 5W max tweeter and mid, and the same 40W bass from that channel. Let's say the new tweeter is slightly more sensitive and better quality, which in your opinion will be better? Will this be a decent upgrade or very minimal at best? Thanks again!

It would actually depend on if your going to cross off the mid or try to run it full range. And the sensitivity per watt of the speakers. Narrowing the frequency each speaker is going to reproduce will get better clarity overall. That's where a 3-way passive crossover comes into play. The wiring diagram shows the front bass is running full range and the tweeter is crossed off using a inline axial Cap.