The Mackie Thump118S is an 18-inch subwoofer for reinforcing live sound and PA systems ideal for installation in live venues. This subwoofer provides the same 1400 W Class D amplification seen in Mackies new Thump 2 range delivering thunderous low-end power to reinforce any venues sound. The Thump118S offers selectable voicing modes to adjust its sound to fit any performance with a variable crossover to dial in exactly where you want the sub to end and your full-range speakers to start. The Thump 118S also provides stereo inputs making it easy to set up a full stereo system as well as high-pass and full-range outputs. Alongside ergonomic corner handles its easy to transport or set up without any hassle. Fill any venue with powerful sound and clarity in bass.