New for 2021 - The new 48TCWRT102 CompRT Subwoofer Enclosure makes surprisingly strong, smooth bass in a box under seven inches deep. Heat is the enemy of endurance. To make our subs even more reliable, KICKER engineers developed Forced-Air Cooling to help our CompRT subs run 20 percent cooler. Whether it's behind the back bench of your pickup, under a seat, or in the trunk, the CompRT sub box is a perfect fit. One amplifier connection later – you're boomin!