User manual JBL ES 250PW

[. . . ] 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. Unplug this apparatus during lightning storms or when unused for long periods of time. 14. Refer all servicing to qualified service personnel. [. . . ] While in theory it is true that the larger wavelengths of extremely low frequencies are basically nondirectional, the fact is that, when installing a subwoofer within the limited confines of a room, reflections, standing waves and absorptions generated within the room will strongly influence the performance of any subwoofer system. As a result, the specific location of the subwoofer becomes important, and it is strongly recommended that you experiment with placement before choosing a final location. Placement will depend upon your room and the amount and quality of bass required (for example, whether or not your room permits placement of the subwoofer near either satellite). SUB RIGHTCHANNEL SPEAKER PRIMARY LISTENING AREA Figure 1. This example shows the subwoofer positioned behind the right-channel satellite speaker to re-create the actual location of bass instruments in an orchestra and/or add impact to movie soundtracks. 3 CONTROLS AND CONNECTIONS Rear Panel ¡ Power Switch TM Line-Level Inputs £ LFE Input ¢ Low-Pass Selector (Wireless Input Only) ID-Code Selector Antenna Phase ª Level · § Crossover Adjustment Control ¶ Subwoofer-Level (Volume) Control ¶ · Phase Switch ª Wireless Antenna Wireless ID Code Off Crossover [Hz] § Transmitter , Transmitter Antenna / Transmitter Power-Supply Input On Low-Pass B Transmitter ID-Code Selector < Transmitter Sub Input ¢ TM L R £ LFE Sub In Power On ¡ Off AC 120V~60Hz 2A ID CODE DC18V 1234 Sub In , / B < 4 SYSTEM CONNECTIONS Choose either Wireless or Wired connection, then follow the appropriate instructions. WIRELESS Connecting the Subwoofer for Wireless Applications WIRED Connecting the Subwoofer for Wired Applications If you have a Dolby® Digital or DTS® receiver/processor with a low-frequency effects (LFE) or subwoofer output: Level ID CODE DC18V Crossover [Hz] 1234 Sub In Wireless ID Code Off Off Onn O Low-Pass Low-Pass 1. Connect a subwoofer cable from the subwoofer or LFE output of your receiver to the Sub In C on the transmitter. Plug the transmitter module's power supply into the wall outlet, and connect the included power cord to the transmitter A. Make sure the Transmitter Antenna , is extended upward. Set the ID code on the transmitter and subwoofer (B and ) to the same position, as described on page 6. When connected properly, the LED on the top of the subwoofer will be orange. Set the Low-Pass Selector ¢ to the "Off" position. NOTES: You may also connect a variable full-range output from an A/V receiver or processor, such as a preamp output or second-room output. In this case, set the Low-Pass Selector ¢ to the "On" position and set the crossover adjustment as described on page 6. Some receivers have two subwoofer outputs. In that case, use either connector. L R LFE Sub In Line In If your receiver/processor does not contain a Dolby Digital or DTS processor but has subwoofer outputs: Level Crossover [Hz] Wireless ID Code Off On Low-Pass L R LFE Sub In Line In NOTE: If your receiver/processor has only one sub out, you may use either the L or R input. 5 OPERATION Power On Connect your signal source (such as an A/V receiver or preamplifier) to the transmitter (if using a wireless connection) or to the subwoofer (if using a wired connection). While you would ordinarily use the short cable to connect to the transmitter or the long one to connect to the subwoofer, either cable can be used, depending on proximity to the signal source. There is no need or benefit gained from connecting the same source to both the transmitter and the subwoofer. However, you could connect two separate sources to the subwoofer by utilizing both its wired and wireless connections. Both signals will essentially be mixed and outputted by the subwoofer. Plug your transmitter's (if using a wireless connection) and subwoofer's AC cord into a wall outlet. Do not use the outlets on the back of the receiver for the subwoofer. Initially set the Subwoofer-Level Control ¶ to the "Min" position. [. . . ] Attach the transmitter module with wall bracket to the wall, using suitable hardware and, if necessary, wall anchors. 6 MAINTENANCE AND SERVICE The enclosure may be cleaned using a soft cloth to remove fingerprints or to wipe off dust. Stains may be removed with an aerosol cleaner, following its instructions. All wiring connections should be inspected and cleaned or remade periodically. The frequency of maintenance depends on the metals involved in the connections, atmospheric conditions and other factors, but once per year is the minimum. [. . . ]