The Caliber BC108US fills your car with sound, but does not take up your entire trunk due to its compact size. Because of the flat design you can easily place this subwoofer under a seat, at the footwell of the passenger seat or on the side of your trunk. This way you have enough space for groceries. The peak power of 500 watts guarantees a solid bass. With the supplied remote control you adjust the sound settings to your own taste. You choose a heavily droning or a subtle bass.