The S3118A is a professional active 18-inch subwoofer designed to deliver powerful, deep, and controlled low-frequency performance for live sound reinforcement, DJ systems, clubs, and fixed installations. With its built-in Class-D amplifier and integrated DSP, it provides reliable high-output bass without the need for an external power amplifier. The subwoofer features three selectable low-pass filter settings (80 Hz, 100 Hz, and 120 Hz), allowing users to adapt the crossover point to different venues, speaker systems, and music styles. A built-in phase switch ensures proper alignment with full-range speakers for smoother bass integration and improved overall sound coherence. All connectors and function controls are conveniently located on the rear panel, making setup and operation simple and efficient. The rugged plywood cabinet and durable finish ensure long-lasting performance in both mobile and installed applications.
