User manual JBL E250P

[. . . ] If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles and the point where they exit from the apparatus. Only use attachments/ accessories specified by the manufacturer. 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/apparatus combination to avoid injury from tip-over. [. . . ] 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. SPEAKER CONNECTION When we designed the E150P and E250P powered subwoofers, our goal was to offer the user the best possible performance combined 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. Speakers and electronics terminals have corresponding positive (+) and negative (­) terminals. It is important to connect both speakers identically: positive (+) on the speaker to positive (+) on the amplifier and negative (­) on the speaker to negative (­) on the amplifier. Wiring "out of phase" results in thin sound, weak bass and a poor stereo image. NOTE: The speaker-level connection method described on page 4 is not a preferred connection and should only be resorted to if your receiver/ processor does not have a line-level or subwoofer output. The customer is responsible for proper connections, and any damage to JBL or other equipment due to improper connections will not be covered by your JBL warranty. Consult with your JBL dealer or an audioinstallation expert if you have any questions about how to connect your subwoofer using the speaker-level inputs. 3 Analog Receiver/Processor ­ Speaker-Level Connections Use this installation method only 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 the speaker wires for both your main left and right speakers, and for the subwoofer, to the same speaker terminals on your receiver or amplifier. The wires may be joined by twisting together the bare ends of the two leads that will be connected to each terminal on the receiver/ amplifier, as shown in the diagram. This procedure should be done only four times (involving a total of eight barewire ends), and only for those wire ends that are being connected to the terminals on your receiver/amplifier. It is important that you avoid joining any other wires. Do not twist together wire ends that are being inserted into terminals on any speaker or on the subwoofer. Do not twist together wire ends that will be used for any speakers other than the front left and right speakers or the subwoofer. Refer to the connection diagram for guidance. Twist together the (+) leads at one end of the speaker wires that you have designated for the left front speaker and for To (+) terminal on left speaker To (+) terminal of left input on subwoofer the left high-level inputs on the subwoofer. [. . . ] · 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 subwoofer. Make sure none of the wires are frayed, cut or punctured, or touching each other. · Review proper operation of your receiver/amplifier. [. . . ]