Alto Professional TS18S 18-inch Powered Subwoofer

The Alto Professional TS18S is an 18-inch powered subwoofer designed to provide substantial low-frequency reinforcement for professional audio applications. It serves as a dedicated bass reproduction unit, delivering the deep, impactful frequencies required to complement full-range speaker systems in various live sound environments. Its primary function is to extend the low-end response of a sound system, ensuring that music and speech have the necessary weight and presence, particularly in larger venues where standard speakers might struggle with bass reproduction. Constructed around a high-efficiency 2500-watt Class D amplifier, the TS18S delivers considerable power in a relatively compact format. The heart of the system is its robust 18-inch transducer, which features a 3-inch high-temperature voice coil engineered for durability during extended use. The cabinet is built from internally-braced MDF with a front-ported design and is finished with a tough, mark-resistant splatter-spray coating. User-selectable features include three EQ tuning modes (Off, Live, DJ) for adapting to different audio sources and a phase alignment switch with four settings (0°, 90°, 180°, 270°) to ensure optimal integration with main speakers. Connectivity is comprehensive, with two combination XLR and quarter-inch jack inputs, two balanced XLR line outputs, and two XLR thru outputs for daisy-chaining multiple units. A built-in 36mm pole socket allows for secure mounting of a compatible top speaker. This subwoofer is ideally suited for professional sound engineers, mobile DJs, and venues requiring reliable, powerful bass reinforcement. It is a practical choice for applications in concert halls, nightclubs, bars, houses of worship, and for live band performances. Its combination of power, durability, and user-adjustable settings makes it a versatile component that can be tailored to fit into both permanent installations and mobile sound systems, providing the foundational low-end that completes a professional audio setup.