I own a Volvo C30 2007, which I love, but the sound system was really outdated and lacked anything someone like me, who enjoys loud music with strong bass, would look for.
So I decided to change the door speakers. That led to replacing the rear speakers as well, which then led me to add an amp for them.
And last but not least, I decided to install a subwoofer in the tiny trunk, with its own amp.
Result: 4 new speakers, 1 subwoofer, and 2 amps powering the whole sound system.







