Yamaha STM-S118 Nexo STM Sub Bass

High-Performance Sub-Bass Cabinet for Large-Scale Audio Systems
The Yamaha STM-S118 is a powerful sub-bass module designed to deliver deep, high-impact low-frequency reinforcement for professional touring and large-scale live sound applications. Equipped with a high-excursion 18-inch Neodymium driver, this subwoofer offers the output equivalent of conventional dual 18-inch subwoofers, ensuring unmatched performance in demanding environments. Whether flown in an array or ground-stacked, the S118 provides the low-end power needed for concert halls, festivals, and high-energy live events.

Innovative Bandpass Design for Maximum SPL Output
The STM-S118 features an advanced bandpass enclosure design that maximizes efficiency and output. This design allows the subwoofer to deliver deep bass frequencies with extreme clarity and power, reaching a peak SPL of 143dB. Whether used in single configurations or as part of a larger STM system, this subwoofer provides the foundation for full-spectrum sound reinforcement, enhancing the impact of every mix.

Flexible Deployment with Omni and Cardioid Modes
Unlike traditional subwoofers, the S118 offers both omnidirectional and cardioid operational modes. The omnidirectional mode provides even low-frequency coverage in all directions, while the cardioid mode focuses bass energy toward the audience while reducing unwanted rearward projection. This flexibility allows sound engineers to optimize bass dispersion for any venue or event setup, reducing stage noise and improving clarity for performers and audiences alike.

CompassRig™ and REDLock™ Rigging for Fast, Secure Setup
The STM-S118 incorporates Yamaha’s CompassRig™ and REDLock™ rigging systems, making it easy for a single technician to fly or stack the system quickly and safely. The CompassRig™ system enables precise pre-setting of inter-cabinet angles, while the REDLock™ handle secures front rigging points from the rear of the cabinet, ensuring a secure and efficient assembly process. These features save setup time and improve stability in both flown and ground-stacked configurations.

Seamless Integration with STM Modular Systems
Designed to complement the STM series, the S118 seamlessly integrates with the M46 main module, M28 omni module, and B112 bass module. This modularity allows sound engineers to build scalable systems tailored to different venue sizes and acoustic needs. Whether reinforcing bass frequencies in a stadium concert or providing low-end punch for a club event, the S118 enhances any system with powerful, precise bass reproduction.