FOCAL ISUBBMW4 BMW Subwoofer Upgrade

ISUB BMW 4 is a subwoofer that delivers powerful bass thanks to its neodymium engine, a high performing Focal technology. With ISUB BMW 4, the sound is neutral and the install is quick thanks to the spacer integrated in the chassis that allows perfect integration into the original location. With its 4 Ohms impedance, it is ideal with your original amplification