User manual JBL SUB6

[. . . ] Poly-fiber Laminate Woofer Provides tight bass and well-defined sound reproduction without harshness, stridency, or listener fatigue. Acoustically Optimized Cabinet Optimized to produce an extended and level bass response in conjunction with the internal amplifier. The grille logo may be turned to match either orientation of the subwoofer. G SERIES LOUDSPEAKERS OWNER'S MANUAL SUB10 G CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: To reduce the risk of electric shock, do not remove amplifier back. Refer servicing to qualified service personnel. The lightning flash with arrowhead symbol, within equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. [. . . ] POWER Plug the power cord into a grounded wall outlet or the accessory outlet on the back of your amplifier/receiver. INPUTS Your G Sub10 subwoofer has both line-level and speaker-level input connections. Review your receiver/TV/source amplifier instruction manual to see which outputs your equipment provides, then follow the appropriate instructions below. Line Input ­ Use the RCA (phono) input jacks labeled "Line Input" when connecting from a line-level device, such as a pre-amp, crossover, signal processor, or when using any of the line-level outputs on the rear of your receiver/TV/source amplifier. If your receiver has a single RCA output for sending the signal to the subwoofer, you may connect it to both Right & Left input jacks by using a "Y" adapter (not included). Many stereo/ large screen TVs have stereo (Right & Left) 2 RCA jacks for sending the signal to external audio equipment. Your subwoofer connects to these using both the Right & Left input jacks (see Figure 1). Speaker Level Input (from amplifier) ­ Use these inputs when connecting to the "Speaker Out" (speaker mains) of the receiver/ TV/source amplifier. Run speaker wires from the speaker output terminals (usually coded red and black) on the rear of the receiver/TV/source amplifier to the red and black input terminals labeled "Speaker Level Input (from amplifier)" on the subwoofer (see Figure 2). Preparing the Hookup Wire Your JBL dealer can recommend suitable cables, or you can buy wire at most hardware or electronic stores. High-quality connectors and cable offer consistent performance that does not deteriorate over time. NOTE: When the amplifier is in the "Standby" mode it is effectively turned off. The Red LED tells you that the subwoofer is plugged into the AC wall power with its power switch turned on, but the amplifier circuitry is not engaged. You do not have to reach to the back panel and turn the power switch off after every use. For extended periods of non-use (i. e. , vacations, etc. ), you may wish to actually turn the subwoofer off using the power switch. 5 LEVEL NOTE: When first setting up your subwoofer, set the Level control counterclockwise to "Min" (minimum) before turning power switch ON. Turn power switch to "On, " and use the "Level" knob to add the appropriate amount of bass to your main speaker output. Increase the subwoofer level by turning the level knob clockwise until you find a setting that is pleasing to you. CROSSOVER FREQUENCY Use the "Crossover Freq" knob to adjust the upper end of the subwoofer's frequency response. The crossover control determines the highest frequency your subwoofer will + R ­ ­ L+ Receiver or Amplifier Subwoofer or Line Output R L Speaker Wire Speaker Level Input (from amplifier) + R ­ ­ L + Line Input L Level Phase Crossover Freq Reverse Normal R + R ­ ­ L + Min Max 50 (Hz) 200 Speaker Level Output (to external speakers) G Sub10 Subwoofer Speaker Wire ­ + External Speakers ­ + Figure 3: Speaker-Level Output Connection 6 G SERIES LOUDSPEAKERS PLACEMENT CAUTION: Do not place your subwoofer next to heaters, furnaces, or any other heat sources. Since the low frequencies produced by your subwoofer are relatively nondirectional, the placement of your subwoofer is not critical. You may place it under an end table, next to the wall, near the TV, anywhere you would like. Use the PHASE switch to maintain proper acoustic summation with the main speakers. [. . . ] Listen to your G Sub10 subwoofer and main speakers with the switch on "Normal" then listen to the same material with the switch on "Reverse. " Decide which way sounds better and leave the switch in this position. You should repeat this procedure if you move your subwoofer to another part of the room. any cleaners or solvents on the speaker drivers themselves. TROUBLESHOOTING Your subwoofer can only be repaired by an authorized JBL repair station. Before seeking service for your subwoofer, please recheck all connections as outlined in this manual. Verify the AC wall power source is working properly by checking it with another appliance. [. . . ]