This manual describes the operation and maintenance of the YST-FSW150/YST-FSW050 subwoofer system UB
The Owner’s Manual begins with important safety instructions and guidance for proper placement, ventilation, and power‑plug handling. It explains how to set the voltage selector, connect the subwoofer to audio components, and secure the unit on a stand or floor.
Subsequent sections cover the front‑panel controls, volume adjustment, system connector usage, and troubleshooting tips. The manual also describes Yamaha’s Advanced Active Servo Technology II and lists the supplied accessories and technical specifications.
| Voltage selector range | 110–120/220–240 V AC, 50/60 Hz |
|---|---|
| Power indicator color | Green when the unit is turned on |
| Volume control operation | Clockwise increases volume, counter‑clockwise decreases |
| System connector | SYSTEM CONNECTOR jack with supplied system control cable |
Set the voltage selector switch on the bottom panel to match your local mains voltage (110–120 V or 220–240 V) before plugging the unit into the AC outlet.
Connect the subwoofer cable from the amplifier’s output jack to the INPUT jack on the subwoofer, then secure the power connection.
Use the VOLUME knob on the front panel; turn clockwise to raise the level and counter‑clockwise to lower it.