User manual JBL S412PCH

[. . . ] This will prevent damage to the product due to lightning and power-line surges. An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits, or where it can fall into such power lines or circuits. When installing an outside antenna system, extreme care should be taken to keep from touching such power lines or circuits, as contact with them might be fatal. Figure 1. Example of Antenna Grounding as per National Electrical Code, ANSI/NFPA 70 Antenna Lead-In Wire Ground Clamp Antenna Discharge Unit (NEC Section 810-20) Grounding Conductors (NEC Section 810-21) Electric Service Equipment Ground Clamps Power Service Grounding Electrode System (NEC Art 250, Part H) 2 1. [. . . ] Objects have fallen onto, or liquid has been spilled into, the product; or c. 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 exhibits a distinct change in performance; this indicates a need for service. 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. The product should be situated away from heat sources such as radiators, heat registers, stoves or other products (including amplifiers) that produce heat. THANK YOU FOR CHOOSING JBL For more than 50 years, JBL has been involved in every aspect of music and film recording and reproduction, from live performances to the recordings you play in your home, car or office. We're confident that the JBL loudspeakers you have chosen will provide every note of enjoyment that you expected ­ and that when you think about purchasing additional audio equipment for your home, car or office, you will once again choose JBL. It enables us to keep you posted on our latest advancements, and helps us to better understand our customers and build products that meet their needs and expectations. Then plug each patch cord into the LFE/Subwoofer input of the left and right S412PII speakers. Note: If your receiver has separate left and right line-level subwoofer (or LFE) output jacks, you do not need to use a Y-Connector. 5 AMPLIFIER CONTROLS LFE Level Control: Allows you to adjust the volume of the low-frequency effects/ subwoofer channel to suit your room acoustics or tastes. If you are not using the LFE input, the LFE level control will not operate. Configuring Your Receiver: You should choose the "Large" or "Wide" option for the left- and right-front speakers so that full lowfrequency information will be sent to the S412PII speakers. Make sure that you also configure your receiver for "Subwoofer On" or "LFE On. " In this case, the LFE/Subwoofer signal will consist only of the . 1 (bass) channel. The LFE signal level can be adjusted by using the LFE level on the S412PII amplifier panel. For initial setup, you should set the level controls on both speakers at minimum (full counterclockwise rotation). With 5. 1, 6. 1 or 7. 1 source material playing, advance the level controls on each speaker slowly until the desired amount of effects channel is present. This is a rather subjective adjustment and should be made using a variety of program materials. If you choose, you can use the "Small" or "Narrow" setting on your receiver. In this case, all of the information below 80Hz will be fed to the LFE/ Subwoofer input on the S412PII. [. . . ] Review the "LineLevel Connections" section on page 5 of this manual and make sure that a single RCA patch cord is connected to each loudspeaker from the Y-Connector plugged into the receiver/amplifier's subwoofer output. · In Dolby Digital or DTS mode, make sure your receiver/ processor is configured so that the subwoofer and LFE output are enabled. If you are using the S412PII LFE/Subwoofer input and the bass level decreases (instead of increasing) when you turn the LFE/Subwoofer Level knob clockwise: · Recheck to make sure that your receiver or amplifierspeaker outputs are correctly connected to the S412PII speaker inputs (gold-plated binding posts), (+) to (+) and (­) to (­). The S412PII (+) terminal has a red stripe and is located on the right-hand side, below the letter "L" of the molded JBL logo, when looking directly at the back of the S412PII. [. . . ]