Always stored in a dry and clean space. This subwoofer by Mackie boasts a driver size of 18 and an RMS power of 1200 W, making it an ideal addition to any pro audio equipment setup. With its active and amplified features, this wired subwoofer has exceptional connectivity that delivers powerful bass performance. Perfect for musical instruments and DJ equipment, this Mackie Thump18S model promises to give you an immersive audio experience.