Focal Integration IBus 20 compact powered subwoofer | Crutchfield

You can add high-quality Focal bass to your ride, even if you don&have a lot of space to do it, thanks to the Focal Integration IBus 20 powered subwoofer. It&slim enough to fit under a of of seats, behind a truck seat, or in your trunk. You can use the IBus 20 with an aftermarket head unit or your factory system, and an included bass level knob lets you fine-tune your bass on the fly. The IBus 20 is built tough, so you can count on it cranking out the bass for a long time to come.