User manual JBL E250PBE

[. . . ] If an outside antenna or cable system is connected to the product, be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built-up static charges. Article 810 of the National Electrical Code, ANSI/ NFPA 70, provides information with regard to proper grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of grounding conductors, location of antenna-discharge unit, connection to grounding electrodes, and Figure A. Example of Antenna Grounding as per National Electrical Code, ANSI/NFPA 70 requirements for the grounding electrode. 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. [. . . ] 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. 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 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 system 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. Please take a moment to register your product on our Web site at www. jbl. com. This 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. JBL Consumer Products SPEAKER PLACEMENT · As a general rule, bass response increases as a subwoofer is placed closer to a wall. Therefore, bass output is maximized when the subwoofer is placed in a corner. · It is also recommended that the subwoofer be positioned along the same wall as the front loudspeakers. Low-frequency sounds are normally omnidirectional, meaning the listener can't tell where they are generated from. However, frequencies between 75Hz and 150Hz can be localized, especially at higher volume levels. Positioning your subwoofer as recommended will provide the most natural soundstage and imaging from your loudspeaker system. Repeat this process for the (­) connections for the left front Left Front speaker and left input on the subwoofer, and then for the (+) and (­) connections for the right front speaker and right high-level inputs on the subwoofer. Connect your receiver or amplifier's center and surround speaker terminals to the corresponding terminals on the back of your center and surround speakers. + ­ Center Right Front + ­ + ­ Subwoofer L HIGH LEVEL IN + Left Front ­ Receiver Center R Right Front + ­ Twist Here + ­ Twist Here + ­ Left Surround Right Surround + ­ + ­ Left Surround Right Surround + ­ + ­ To front left (+) terminal on receiver/amplifier 4 Analog Receiver/Processor ­ Line-Level Connections Use this installation method with an analog receiver/ processor that does not have digital processing or bass management, and that is equipped with a full-range subwoofer output or a volumecontrolled preamp (line-) level output: Use RCA-type interconnect cables to connect the linelevel 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 Logic*-only 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. Connect each speaker to the corresponding speaker terminals on your receiver or amplifier. Make sure your receiver or processor is configured so that the subwoofer is "On. " RECEIVER Subwoofer Out LEVEL Min Max LFE NORMAL PHASE 0º 180º CROSSOVER FREQUENCY 50Hz 150Hz L R LINE LEVEL IN L R Note for advanced users: If your receiver/ processor has a built-in lowpass crossover filter for the subwoofer output, then the LFE switch should be set to the "LFE" position to bypass the subwoofer's internal crossover. For LFE use L or R L HIGH LEVEL IN +­ 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. Connect these jacks to the LFE output or subwoofer output on your receiver or amplifier. Note: If your receiver or amplifier has only one subwoofer output jack, you may connect the subwoofer output on your receiver/preamplifier to either the left or right line-level input on the subwoofer. Connect each speaker to the corresponding speaker terminals on your receiver or amplifier. Make sure that you have configured your surround sound processor for RECEIVER/PREAMPLIFIER "Subwoofer On" or Subwoofer Output/LFE "LFE On. " The front, center and surround speakers should be set to "Small" or "Large" depending on their size and frequency response. [. . . ] · Check that the powered subwoofer is plugged into an active electrical outlet and is switched on. · Check all wires and connections between the receiver/ amplifier and the speakers. Make sure none of the speaker wires are frayed, cut or punctured, or touching each other, except for the wires for the front left and right speakers, which may be joined with the wires for the subwoofer at the receiver/ amplifier end only, if you are using the speaker-level connections as described on page 4. If there is low (or no) bass output: · Make sure the connections to the left and right "Speaker Inputs" have the correct polarity (+ and ­). [. . . ]