Bose Professional has expanded its installed sound portfolio with the introduction of the ShowTime STS118E, an installation-grade 18-inch subwoofer engineered to deliver powerful low-frequency performance across permanent indoor and outdoor audio installations.

Designed for music-focused and high-energy applications, the ShowTime STS118E is intended to complement high-output Bose Professional loudspeaker systems, including the AMU, AMM and Forum series, providing extended low-frequency reinforcement while maintaining consistent system voicing and simplifying system design and integration.

“ShowTime STS118E gives our customers an easy way to add serious low-frequency energy to the systems they already trust,” said John Maier, CEO of Bose Professional. “It expands our clients’ existing installations in a way that feels seamless, working effortlessly with our loudspeakers, processors, and amplifiers so designers can scale performance without rethinking their entire platform.”

The new subwoofer features an 18-inch low-frequency driver housed within an installation-grade enclosure designed for both ground-stacked and flown applications. Integrated suspension points and removable feet offer installation flexibility, while a universal pole cup supports both 35mm poles and M20-threaded poles for secure mounting of full-range loudspeakers where required.

Engineered for permanent deployment in a variety of venues, the ShowTime STS118E incorporates an IP55-rated enclosure suitable for exposed and partially exposed outdoor environments. The subwoofer will be offered in both black and white finishes, enabling integration into a broad range of architectural and performance spaces.

“Our customers and installers will appreciate that STS118E is built for permanent installations from the start,” said Shawn Watts, VP of Americas Sales, Bose Professional. “From the IP55-rated construction and integrated suspension points to the universal pole cup and predictable voicing alongside AMU, AMM, and Forum, every detail is designed to make specification straightforward, installation flexible, and performance rock-solid.”

Scheduled to become available from October 2026, the ShowTime STS118E further expands Bose Professional’s portfolio of installed sound solutions, providing system designers and integrators with a dedicated low-frequency option for applications requiring greater bass impact while maintaining compatibility across the company’s wider loudspeaker ecosystem.