The Kicker C154 is a subwoofer, which means that it can be installed in a vehicle in order to increase the level of bass sound. This one-way 15-inch Kicker speaker has a peak input power of 500 watts, which means that in order to create and manage the power needed to maximize the speaker an external amplifier is needed. And since an amplifier and car subwoofer combination tends to create a lot of heat, the Kicker C154 has a high temperature coil wire vented pole piece to help dissipate it. Along with heat, a car subwoofer will displace air and move around when in use, which is why it has an injection molded cone and a strong support structure. This Kicker speaker does not come with an enclosure, but regardless of whether the user chooses a sealed enclosure or a vented enclosure, the sound will be clean and solid. For many kinds of music, only the highest quality bass will suffice, which makes this Kicker speaker a great choice.