My opinion is that the crappy rear shelf speakers and crappy center speaker ruin the sound quality. I wrote a thread about disconnecting the center speaker, and fading the sound towards 90% front.guys i have a mustang gt 2021 with b & o but it sucks. who changed, what did you put, advise? Thank you
I found (via acousting measurement) that the OEM trunk subwoofer is set way too high at the factory. I wrote another thread about how to adjust the slider controls for bass, mid, treble to improve the overall spectral balance.
The door speakers and tweeters are good enough and need not be replaced IMO.
All these tips are free.