L7T Down-Firing Loaded Enclosures are ultra-thin, square subwoofers loaded in a custom-tuned box, made to pound out the low notes without taking up the boot space you need. With an RMS of up to 600 watts, the L7T thin sub is ready to rock! KICKER signature square sub-design technology uses nearly 20 percent more cone than comparable round subwoofers, moving more air and producing louder bass in the same space! The tough down-firing enclosure design with internal bracing resists stacking weight and scratches. Pile what you want on top of it! As the woofer’s cone moves downward, hot air around the voice coil is forced out of the woofer. As the woofer’s cone moves upward, cool outside air is drawn into the woofer cooling the voice coil. 10 inch L7T subwoofer. Down-firing design provides ultimate subwoofer protection. Thick MDF construction with strong internal bracing.