iCAUTION: TO REDUCE THE RISK OFELECTRIC SHOCK DO NOT REMOVECOVER (OR BACK). NO USER-SERVICEABLEPARTS INSIDE. REFER SERVICING TOQUALIFIED SERVICE PERSONNEL.CAUTIONRISK OF ELECTRIC SHOCKDO NOT OPEN• Explanation of Graphical SymbolsThe lightning flash with the arrowhead symbolwithin an equilateral triangle, is intended to alertyou to the presence of uninsulated “dangerousvoltage” within the product’s enclosure that maybe of sufficient magnitude to constitute a risk ofelectric shock to persons.The exclamation point within an equilateral tri-angle is intended to alert you to the presence ofimportant operating and maintenance (servic-ing) instructions in the literature accompanyingthe appliance.WARNINGTO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK.DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.IMPORTANT!Please record the serial number of this unit in the space below.Model:Serial No.:The serial number is located on the rear of the unit.Retain this Owner’s Manual in a safe place for future reference.OWNER’S MANUALSUBWOOFER SYSTEMYST-SW20Active ServoTechnology