The Ti SUB is a high-performance installation subwoofer engineered to extend the low-frequency response of d&b audiotechnik Ti10L and Ti10P loudspeakers in permanent sound reinforcement systems. As the installation variant of the T SUB, the Ti SUB shares its acoustic design but features cabinet and rigging modifications suited to fixed applications. At the core of the Ti SUB is a long excursion 15-inch driver with a neodymium magnet, housed in a bass-reflex enclosure that delivers controlled and efficient low-end output. Designed to support flexible deployment, the Ti SUB integrates rigging components that allow mechanical connection in flown arrays or ground-stacked configurations, enabling system designers to achieve consistent coverage and optimal performance in a range of venues. Its robust construction, including marine plywood housing and a durable paint finish, ensures reliable operation in demanding environments. The cabinet’s front is protected by a rigid metal grille backed with acoustically transparent foam, and two NL4 connectors mounted on the rear panel provide signal routing flexibility. For projects requiring visual integration or environmental protection, the Ti SUB is available in Special Colour and Weather Resistant variants. By enhancing low-frequency headroom and system efficiency, the Ti SUB plays a critical role in delivering full-range audio performance for fixed installation scenarios in theatres, auditoriums, and multi-purpose venues.