User manual JBL J325

[. . . ] Unplug this apparatus during lightning storms or when unused for long periods of time. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. Do not use attachments not recommended by the product manufacturer, as they may cause hazards. This product should be operated only from the type of power source indicated on the marking label. [. . . ] 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. The product should be mounted to a wall or ceiling only as recommended by the manufacturer. Figure A. Example of Antenna Grounding as per National Electrical Code ANSI/NFPA 70 2 SPEAKER PLACEMENT FRONT SPEAKERS CENTER CHANNEL SPEAKER 0­2 ft 0­0. 6m SUBWOOFER SURROUND SPEAKERS Single surround back speaker may be used with 6. 1 receivers and processors. Alternate placement for surround speakers when only 5. 1 channels are used; required placement for surround back speakers in 7. 1-channel systems. The front speakers should be placed the same distance from each other as they are from the listening position. They should be placed at about the same height from the floor as the listeners' ears will be, or they may be angled toward the listeners. The center channel speaker should be placed slightly behind the front left and right speakers, and no more than 2 feet (0. 6m) above or below the tweeters of the left and right speakers. It is often convenient to set the center speaker on top of the television set, as shown in the drawing. The JBL Cinema Sound speaker system may be used in 5. 1-, 6. 1- or 7. 1-channel applications. In 5. 1-channel applications, two of the surround speakers should be placed slightly behind the listening position and, ideally, should face each other and be at a level higher than the listeners' ears. If that is not possible, they may be placed against a wall behind the listening position, facing forward. Make sure that you have configured your surround sound processor for "Subwoofer On. " Also configure your receiver for 5. 1-, 6. 1or 7. 1-channel operation as appropriate. The front left, front right, center and rear speakers should all be set to "Small. " If your receiver allows you to set the crossover frequency between the subwoofer and the main speakers, select 100Hz or the setting that is the closest frequency below it. DOLBY PRO LOGIC® (NON-DIGITAL) ­ LINE LEVEL Use this installation method for Dolby Pro Logic applications (not Dolby Digital, DTS or other digital processing), where the receiver/processor is equipped with a subwoofer output, or a volumecontrolled preamp (line-) level output: Left Front ­ + Center ­ + Use RCA-type interconnects to connect the line-level subwoofer outputs on your receiver or amplifier to the line-level inputs on the subwoofer. IMPORTANT: Do not use the LFE input on the subwoofer with Dolby Pro Logic processors. Right Front ­ + Subwoofer Line Level In L R NOTE: If your receiver or amplifier has only one subwoofer output jack, then you will need to use a Y-connector (not included). Plug the male end of the Y-connector into your receiver or amplifier's subwoofer output jack, and connect each of the two female ends to separate RCA-type interconnects. Finally, plug the RCA-type interconnects into the linelevel inputs on the subwoofer. Connect each speaker to the corresponding speaker terminals on your receiver or amplifier. Left Front Receiver Subwoofer Out Right Front R ­ L + ­ + Right Surround ­ Left Surround + Make sure your receiver or processor is correctly configured to indicate that the subwoofer is "On. " ­ + Center Surround Back Surround Back Right Left ­ + ­ + ­ + Left Surround ­ + Surround Back Left ­ + Surround Back Right ­ + Right Surround ­ + 5 SUBWOOFER OPERATION Press the Master Power switch (marked "Power" å) to the On position to use the subwoofer. The J325 subwoofer will automatically turn on or go into standby (sleep) mode as described below. When your receiver or amplifier is off, or is not sending program material to the subwoofer, the subwoofer will be in standby mode (the LED on the front of the J325 will be red). When the subwoofer senses an audio signal, it will automatically turn on (the LED will be green). If the subwoofer does not sense a signal after approximately 20 minutes, it will automatically go into standby mode. If you will be away from home for an extended period of time, or if the subwoofer will not be used, switch the Master Power switch å to the Off position by pressing it until it pops out. VOLUME Subwoofer Level MIN MAX Subwoofer Level MIN MAX Volume may be adjusted using the Subwoofer Level control , as shown. The Phase control determines whether the subwoofer's pistonlike action moves in and out in phase with the main speakers or opposite the main speakers. [. . . ] If there is no sound from the surround speakers: · Check all wires and connections between receiver/ processor and speakers. Make sure none of the speaker wires are frayed, cut or punctured, or touching each other. · Review proper operation of your receiver/amplifier and its surround sound features. · Make sure the movie or TV show you are watching is recorded in a surround sound mode. [. . . ]