I have a 2014 bmw f30 car with the Harmon Kardon audio system and I am disappointed with it. I am seeking ideas to upgrade the audio. Do I start with the speakers? Any component upgrade should more or less be a building block for the future.
Fosgate has announced these speakers: T3-BMW1.
Focal has IFBMW-S
There is also Gladden that has speakers and subwoofer.
Looking forward to your inputs.