Bose Professional has announced ShowTime STS118E, a new installation-grade 18-inch subwoofer. The model is intended to add low-frequency output alongside Bose Professional loudspeaker systems such as AMU, AMM, and Forum in indoor and outdoor applications.
The enclosure supports both ground-stacked and suspended deployment. It includes integrated suspension points, removable feet, and a universal pole cup that accepts both 35 mm poles and M20-threaded poles, with black and white finish options available.
The STS118E carries IP55 outdoor-rated construction for exposed and partially exposed environments. Bose Professional presents it as a permanent-installation subwoofer for systems using its loudspeakers, processors, and amplifiers, with availability beginning in October 2026.