User manual JBL S118

[. . . ] Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the product. Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. The power cord of the product should be unplugged from the outlet when left unused for long periods of time. [. . . ] 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. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: To prevent electric shock, do not remove the grounding plug on the power cord, or use any plug or extension cord that does not have a grounding plug provided. Make certain that the AC outlet is properly grounded. Do not use an adapter plug with this product. The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. 1. All the safety and operating instructions should be read before the product is operated. The safety and operating instructions should be retained for future reference. The holes in the center of the collars are intended for banana-type connectors. To comply with European CE certification, these holes are blocked with plastic inserts at the point of manufacture. To use banana-type connectors requires the removal of the inserts. Do not remove these inserts if you are using the product in an area covered by the European CE certification. ANALOG RECEIVER/PROCESSOR ­ SPEAKER LEVEL CONNECTIONS Use this installation method with an analog receiver/ processor that does not have digital processing or bass management, and also does not have a subwoofer output or a volume-controlled preamp (line-) level output: Connect your receiver or amplifier's front left and right speaker terminals to the left and right terminals on the subwoofer that are marked "High Level In. " Connect the left and right terminals on the subwoofer that are marked "High Level Out" to the cor-responding terminals on the back of your front left and right speakers. Connect your receiver or amplifier's center, left and right surround-speaker terminals to the corre-sponding terminals on the back of your center, left and right surround speakers. Left Front + ­ Center + ­ Right Front + Subwoofer L HIGH LEVEL IN + ­ R L HIGH LEVEL OUT` R Left Front + ­ Receiver Center + ­ Right Front + ­ Left Surround + ­ Right Surround + ­ Left Surround + ­ Right Surround + ­ ANALOG RECEIVER/PROCESSOR ­ LINE LEVEL CONNECTIONS English Use this installation method with an analog receiver/ processor that does not have digital processing or bass management, and is equipped with a full-range subwoofer output or a volume-controlled preamp (line-) level output: Use RCA-type patch cords to connect the line-level subwoofer outputs on your receiver or amplifier to the line-level inputs on the subwoofer. IMPORTANT: Make sure that the LFE toggle switch on the subwoofer is in the "Normal" position. Do not use the "LFE" position with Dolby Pro Logiconly processors. Note: If your receiver or amplifier has only one subwoofer output jack, then you may connect the subwoofer output on your receiver/preamplifier to either the left or right line-level input on the subwoofer. It makes no difference which jack you choose. Connect each speaker to the corresponding speaker terminals on your receiver or amplifier. Make sure your receiver or processor is configured correctly: Make sure that the subwoofer is configured as "On. " Note for advanced users: If your receiver/processor has a built-in low-pass crossover filter for the subwoofer output, then the LFE switch should be set to the "LFE" position to bypass the subwoofer's internal crossover. LEVEL Min Max LFE NORMAL PHASE 0º 180º CROSSOVER FREQUENCY RECEIVER Subwoofer Out 50Hz 150Hz L R LINE LEVEL IN L R For LFE use L or R L HIGH LEVEL IN +­ R L HIGH LEVEL OUT R DIGITAL RECEIVER/PROCESSOR ­ LFE CONNECTION Use this installation method for Dolby Digital, DTS® or other digital surround processors that have bass-management programming, or for analog receivers/processors that have a filtered subwoofer output: IMPORTANT: Make sure that the LFE toggle switch on the subwoofer is in the "LFE" position. Use the line-level input jacks for the Low-Frequency Effects channel. [. . . ] Adjust the subwoofer level so that the volume of the bass information is pleasing to you. CROSSOVER ADJUSTMENTS The Crossover Frequency Control determines the highest frequency at which the subwoofer reproduces sounds. If your main speakers can comfortably reproduce some lowfrequency sounds, set this control to a lower frequency setting, between 50Hz ­ 100Hz. This will concentrate the subwoofer's efforts on the ultradeep bass sounds required by today's films and music. If you are using smaller bookshelf speakers that do not extend to the lower bass frequencies, set the low-pass crossover control to a higher setting, between 120Hz ­ 150Hz. [. . . ]