User manual MACKIE SWA1801

[. . . ] SWA1801 ACTIVE SUBWOOFER SYSTEM USER'S MANUAL ACTIVE LIMIT PARALLEL SIGNAL THERMAL POWER THRU (FULL RANGE OUTPUT) FULL RANGE INPUT SUBWOOFER CONTROL NORMAL HIGH PASS (MID/HIGH FREQ) OUTPUT 120Hz L L SUBWOOFER LEVEL IN R NORMAL OUT R REV 180 PHASE POWER ON SWA1801 ACTIVE SUBWOOFER 115V-AC FUSE AC125V-T6. 3A DESIGNED BY MACKOIDS IN WOODINVILLE, WA, USA AND MACKIE EUROPE COPYRIGHT ©2000 · THE FOLLOWING ARE TRADEMARKS OR REGISTERED TRADEMARKS OF LOUD TECHNOLOGIES INC. : "MACKIE", AND THE "RUNNING MAN" FIGURE · PATENT PENDING CAUTION AVIS RISK OF ELECTRIC SHOCK DO NOT OPEN RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK) NO USER-SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL 9. Power Sources -- This Mackie product should be connected to a power supply only of the type described in these operation instructions or as marked on this Mackie product. Power Cord Protection -- Power supply cords should be routed so that they are not likely to be walked upon or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit this Mackie product. Object and Liquid Entry -- Care should be taken so that objects do not fall on, and liquids are not spilled into, this Mackie product. [. . . ] NEVER attempt to suspend the SWA1801 by its handles. Unbalanced Male XLR Connector 6 AC POWER Be sure the SWA1801 is plugged into an outlet that is able to supply the correct voltage specified for your model. If the voltage should drop below 97% of the specified line voltage, the built-in amplifiers will no longer be able to supply rated power. (They will continue to operate down to 80% of the rated line voltage, but won't reach full power, resulting in lower headroom. ) Be sure the electrical service can supply enough amperage for all the components connected to it. We recommend that a stiff (robust) supply of AC power be used because the amplifiers place high current demands on the AC line. The more power that is available on the line, the louder the speakers will play and the more peak output power will be available for cleaner, punchier bass. A suspected problem of "poor bass performance" is often caused by a weak AC supply to the amplifiers. Never remove the ground pin on the power cord of the SWA1801 or any other component. If the thermal switch activates frequently, try turning down the level control a notch or two on the mixing console (or other signal source) or on the subwoofer itself to avoid overheating the amplifiers. If the temperature in the room is too high, it could cause the amplifier to overheat. In this case, you should try aiming a fan at the rear panel to move more air across the heatsink panel. SERVICE INFORMATION Warranty Service Details concerning warranty service are spelled out on page 11 of this manual. If you think your subwoofer has a problem, please do everything you can to confirm it before calling for service, including reading through the following Troubleshooting section. Doing so might save you from being deprived of your Mackie loudspeaker. Of all Mackie products returned for service (which is hardly any at all), many are coded "CND" -- Could Not Duplicate-- which usually means the problem lay somewhere else in the system. The following troubleshooting tips may sound obvious, but here are some things you can check: THERMAL CONSIDERATIONS The SWA1801 has a powerful 900 watt amplifier built-in. As amplifiers produce heat, it is important to dissipate the heat as quickly as possible. This results in increased reliability and longevity for the amplifier. The amplifier module is mounted on a large heatsink, which is cooled by convection where cool air is drawn through it's fins, carrying the heat away. In order for this convection cooling to work efficiently, it is important to provide adequate airspace behind the loudspeaker. When you position the SWA1801, we recommend leaving at least six inches of air space behind it. In the unlikely event of the amplifier overheating, a built-in thermal switch will activate, which mutes the signal. When the amplifier has cooled down to a safe operating temperature, the thermal switch resets itself, and the SWA1801 resumes normal operation. Troubleshooting No power · Our favorite question: Is it plugged in?If you suspect the AC line fuse is blown, please see the "Repair" section on page 9. 7 No sound · Is the input LEVEL control for the input source or the subwoofer turned all the way down? [. . . ] Ship the product in its original shipping carton, freight prepaid to the authorized service center. The address of the closest authorized service center will be given to you by Technical Support. IMPORTANT: Make sure that the Service Request Number is plainly written on the shipping carton. LOUD Technologies reserves the right to inspect any products that may be the subject of any warranty claims before repair or replacement is carried out. [. . . ]