I recently installed the 2021 DIY kit to my Model 3, and I can barely tell a difference between the original sound system and this new one with the a-pillar speakers. I know the speakers work because if I open the doors, I can hear them, but they create just a little bit of noise. Is there anything wrong with my setup?
It should be a pretty significant difference. You should check your connections to the tweeters to make sure they are solid.