The JBL ASB6128 is a high-output, dual 18-inch powered subwoofer engineered for demanding live sound reinforcement and large-scale fixed installation applications where substantial low-frequency energy and clarity are required. This subwoofer integrates two long-excursion 18-inch drivers with a high-power, dedicated amplifier and onboard DSP (Digital Signal Processing) within a single, road-ready enclosure. The system is designed to deliver deep, impactful bass with high maximum sound pressure levels, making it suitable for concert touring, festivals, and large venues.

The integrated amplifier module is specifically tuned to the characteristics of the dual drivers and the enclosure's internal volume and porting. The included DSP provides essential system management features, such as precision crossover filtering, driver protection limiting, and system equalization, ensuring optimal performance and reliability. This self-contained, powered design simplifies system setup by reducing the need for external amplifier racks and complex signal processing chains, offering a plug-and-play solution for extending the low-end reach of a main sound system.

Built with JBL's professional-grade components, the enclosure is constructed from durable plywood with a textured finish and features robust metal grilles to protect the drivers. Integrated handles and ergonomic design facilitate transportation and deployment. With comprehensive input/output connectivity, including pass-through outputs for daisy-chaining multiple cabinets, the ASB6128 is designed for flexible integration into large arrays or distributed subwoofer setups, providing the foundational low-frequency power for professional audio systems.