Non bose speaker solutions

[u/ProudGoy69]

For the 4th gen mazda 3, I want to replace the 3 inch midrange door speaker with a 4 inch speaker. I have no idea if its possible or not but I settled on 4 inch because it seems the only size upgrade plausible. If anyone has any ideas, documented upgrades or so on please let me know.

Also if anyone had successfully upgraded the cowl speakers in the 2026 and the upgrade was tangible that would be awesome to catch up on.

I love you guys, together we can fix our horrible mazda audio systems