BMW M4 Custom Subwoofer
At CSD Audio, it’s all about clean & stealth. We all want our cars to sound better but don’t want to lose storage space. In this M4, I stashed two Focal Access 10 inch subwoofers in a storage area under the floor. Weight was a major concern for this BMW owner so this box was […]
Tags: bmw, Fiberglass, focal, m4, Subwoofer, under floor