The Mackie 1400-watt 18" Thump118S subwoofers not only deliver the massive bass you need, but they are also the perfect match for your Thump loudspeaker system. Custom selectable voicing modes and a variable crossover make optimization for your system easy, while stereo inputs plus High-Pass and Full-Range outputs offer plenty of configuration flexibility. Integrated top corner handles make transport easier than ever. Add Thump subwoofers to your system and bring the rumble to your next gig.