Yamaha YST-SW015 subwoofer user manual, introduces the features and usage of the product.
The manual begins with safety precautions, warning symbols, and proper handling to prevent fire, electric shock, or injury. It emphasizes using the correct AC100 V (50/60 Hz) power source and keeping the unit away from moisture, heat, and unstable surfaces.
It then explains how to place the subwoofer beside the main speakers, adjust the auto‑standby sensitivity switch, use the high‑cut frequency knob and phase switch, and troubleshoot common issues such as no power, low bass, or unwanted noise. Warranty information and service network contacts are provided at the end. This manual is written in Japanese.
The subwoofer must be used with AC 100 V (50/60 Hz) power supply.
Follow the troubleshooting table in the manual, check power connections, volume settings, and signal input, and if unresolved, unplug the unit and contact the service center.