Yamaha YST-SW120 Owner's Manual

Contents

IMPORTANT!Please record the serial number of thisunit in the space below.Model:Serial No.:The serial number is located on the rearof the unit.Retain this Owner’s Manual in a safeplace for future reference.WARNINGTO REDUCE THE RISK OF FIRE ORELECTRIC SHOCK, DO NOT EXPOSETHIS UNIT TO RAIN OR MOISTURE.RISK OF ELECTRIC SHOCKDO NOT OPENCAUTION: TO REDUCE THE RISK OFELECTRIC SHOCK, DO NOT REMOVECOVER (OR BACK), NO USER-SERVICEABLEPARTS INSIDE, REFER SERVICING TOQUALIFIED SERVICE PERSONNEL.The lightning flash with arrowheadsymbol, within an equilateral triangle,is intended to alert you to thepresence of uninsulated “dangerousvoltage” within the product’senclosure that may be of sufficientmagnitude to constitute a risk ofelectric shock to persons.The exclamation point within anequilateral triangle is intended to alertyou to the presence of importantoperating and maintenance(servicing) instructions in theliterature accompanying theappliance.• Explanation of Graphical SymbolsCAUTIONActive Servo Processing Subwoofer SystemBuilt-in 70W Power Amplifier (YST-SW120)Built-in 50W Power Amplifier (YST-SW60)2 Way Selectability for ConnectionsHigh Frequency Cut-off Point (HIGH CUT) ControlPHASE SwitchOWNER’S MANUALCONTENTSSafety Instructions ...................2Features...................................4Placement................................4Connections.............................5Controls and Their Functions .......8Adjusting Volume .....................9Active Servo Technology ........11Troubleshooting ......................12Specifications .........................12YST-SW120/60Thank you for selecting this YAMAHA Subwoofer System. Active ServoTechnology