User manual JBL BASS 20

[. . . ] The safety and operating instructions should be retained for future reference. All warnings on the product and in the operating instructions should be adhered to. All operating and use instructions should be followed. The product should not be used near water ­ for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, and the like. [. . . ] This will prevent damage to the product due to lightning and power-line surges. 16. Do not overload wall outlets, extension cords, or integral convenience receptacles, as this can result in a risk of fire or electric shock. Never push objects of any kind into this product through openings, as they may touch dangerous voltage points or short-out parts that could result in a fire or electric shock. Never spill liquid of any kind on the product. Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following conditions: a. The power-supply cord or the plug has been damaged; or b. Objects have fallen onto, or liquid has been spilled into, the product; or c. The product has been exposed to rain or water; or d. The product does not operate normally when following the operating instructions. Adjust only those controls that are covered by the operating instructions, as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the product to its normal operation; or e. The product has been dropped, or the enclosure damaged; or f. The product does not appear to operate normally or exhibits a marked change in performance. Do not use attachments not recommended by the product manufacturer, as they may cause hazards. When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or that have the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock or other hazards. Upon completion of any service or repairs to this product, ask the service technician to perform safety checks to determine that the product is in proper operating condition. Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous voltage or other hazards. Refer all servicing to qualified service personnel. [. . . ] · Make sure that the subwoofer is plugged into an active electrical outlet. · Powered subwoofer is plugged in and is either in the "On" or "Auto" position. If there is no sound from the surround speakers, check the following: · Check all wires and connections between receiver/ amplifier and speakers. Make sure none of the speaker wires are frayed, cut, or punctured. [. . . ]