13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. 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.
lines or circuits. When installing an outside antenna system, extreme care should be taken to keep from touching such power lines or cir- cuits, as contact with them might be fatal.
19. Do not overload wall outlets, extension cords, or integral convenience receptacles, as this can result in a risk of fire or electric shock.
20. Never push objects of any kind into this product through openings, as they may touch dangerous volt-
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 enjoy- ment 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 regis- ter 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 under- stand our customers and build products that meet their needs and expectations.
JBL Consumer Products
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat reg- isters, stoves or other apparatus (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two
hazards.
16. This product should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power supply to your home, consult your product dealer or local power company. For products intended to operate from battery power, or other sources, refer to the operating instructions.
17. If an outside antenna or cable system is connected to the product, be sure the antenna or cable sys- tem 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
on the product.
21. The apparatus shall not be exposed to dripping or splashing, and no objects filled with liquids, such as vases, shall be placed on the apparatus.
22. 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 serv- ice personnel.
23. When replacement parts are required, be sure the service tech- nician has used replacement parts specified by the manufacturer or that have the same characteristics as the original part. Unauthorized substitutions may result in fire, elec- tric shock or other hazards.
•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 nor- mally omnidirectional, meaning the listener can’t tell where they are generated from. However, frequencies between 75Hz and 150Hz can be localized, espe- cially at higher volume levels. Positioning your subwoofer as recommended will provide the most natural soundstage and imaging from your loudspeaker system.
Remember that these are just guidelines. Since every listening room is different, JBL strongly
recommends experimenting with the positioning of your subwoofer to obtain the most pleasing results in your room. One technique that can help you find the ideal subwoofer location is to temporarily place the subwoofer near the main listening location. Then move around the room and determine where you hear the most pleasing bass performance. This would then be the ideal location for the subwoofer.
blades with one wider than the other. A grounding-type plug has two blades and a third grounding
grounding of the mast and support- ing structure, grounding of the lead- in wire to an antenna discharge
24. Upon completion of any service or repairs to this product, ask the service technician to perform safety
SPEAKER CONNECTION
prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched, partic- ularly at plugs, convenience recep- tacles and the point where they exit from the apparatus.
11. Only use attachments/acces- sories specified by the manufacturer. 12. Use only with the cart,
stand, tripod, bracket or table specified by the manufacturer or sold with the apparatus. When a cart is used, use
caution when moving the cart/appa- ratus combination to avoid injury from tip-over.
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unit, size of grounding conductors, location of antenna-discharge unit, connection to grounding electrodes, and requirements for the grounding electrode. See Figure A.
18. 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
Figure A.
Example of Antenna Grounding as per National Electrical Code, ANSI/NFPA 70
checks to determine that the prod- uct is in proper operating condition. 25. The product should be mounted to a wall or ceiling only as recom- mended by the manufacturer.
When we designed the L8400P powered subwoofer, our goal was to offer the user the best possible performance com- bined with the most flexible and complete installation options. Please look over the following three examples to determine which description best matches your system and follow the corresponding hookup instructions.
To use the binding-post speaker terminals with bare wire, unscrew the collar until the hole through the center post is visible under the collar. Insert the bare end of the wire through the hole in the post,
then screw the collar back down until the connection is tight. 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.
Speakers and electronics have corresponding positive
(+)and negative (–) terminals. It is important to connect both
speakers identically: positive
(+)on the speaker to positive
(+)on the amplifier and nega- tive (–) on the speaker to negative (–) on the amplifier. Wiring “out of phase” results in thin sound, weak bass and a poor stereo image.
With the advent of multichan- nel surround sound systems, connecting all of the speakers in your system with the cor- rect polarity remains equally important in order to preserve the proper ambience and directionality of the program material.
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