User manual MACKIE SRS1500

[. . . ] SRS1500 ACTIVE SUBWOOFER SYSTEM USER'S MANUAL ACTIVE PROTECTION PARALLEL POWER POWER THRU (FULL RANGE OUTPUT) FULL RANGE INPUT SUBWOOFER CONTROL NORMAL (+4dBu ) HIGH PASS (MID/HIGH FREQ) OUTPUT 120Hz ON L L O O OFF +15 SUBWOOFER LEVEL NORMAL R R REV 180 120 VAC 60HZ 350W IN PHASE OUT DUAL SUBWOOFER APPLICATION: A. PLUG THE LEFT SUBWOOFER'S LEFT HIGH PASS OUTPUT INTO THE LEFT SPEAKER'S INPUT. PLUG THE RIGHT SUBWOOFER'S RIGHT HIGH PASS OUTPUT INTO THE RIGHT SPEAKER'S INPUT. SINGLE SUBWOOFER APPLICATION: A. PLUG THE SUBWOOFER'S LEFT HIGH PASS OUTPUT INTO THE LEFT SPEAKER'S INPUT. [. . . ] Use it to daisy-chain several SRS1500s together off the same signal source. PROTECTION Indicator The SRS1500 has a built-in limiter and thermal protection circuit that protects the amplifier and transducer. If the protection indicator blinks frequently or lights continuously, turn down the signal source's level control until the protection indicator only blinks occasionally. If the internal temperature should exceed a safe operating level, the signal is muted to allow the amplifier to cool. When connecting a balanced signal, be sure it's wired per AES (Audio Engineering Society) standards: XLR Hot (+) Pin 2 Cold (­) Pin 3 Shield (Ground) Pin 1 There are also four male XLR connectors labeled THRU (FULL RANGE OUTPUT) and HIGH PASS (MID/HIGH FREQ) OUTPUT. The THRU output connectors allow you to connect more than one SRS1500 to your system. Simply plug the signal source (i. e. , mixer output) into the first speaker's FULL RANGE INPUT jacks, and patch that speaker's THRU jacks to the next speaker's INPUT jacks, and so on, daisy-chaining multiple speakers. The THRU jack is wired straight from the FULL RANGE INPUT connector -- there is no electronic circuitry between -- so the signal coming out of the THRU jack is exactly the same as the signal going in. The HIGH PASS OUTPUT jacks provide a line-level signal of the frequencies above 120Hz that you connect to a pair of active speakers (or to a stereo amplifier powering a pair of passive speakers). See the diagrams on the rear panel of the SRS1500 for additional connection information. Balanced XLR Connectors If connecting an unbalanced signal to the SRS1500 balanced input, be sure that the signal high (hot) connection is wired to Pin 2 and the unbalanced ground connection is wired to the low and the ground connections of the balanced input (Pins 3 and 1). If there are ground-loop problems, try connecting the unbalanced ground connection only to the input low connection (Pin 3), and leaving the input ground connection disconnected. PLACEMENT The SRS1500 subwoofer is designed to sit on the floor or on sturdy stands. A socket is provided on the top of the SRS1500 for mounting the Mackie SRM450 active speaker. Use the optional Mackie speaker mounting pole to mount the SRM450 on the SRS1500 (see Hookup Diagram on page 5). If you are setting them up outdoors, make sure they are under cover if you expect rain. Unbalanced Male XLR Connector 6 AC POWER Be sure the SRS1500 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 SRS1500 or any other component. ing temperature, the thermal switch resets itself, and the SRS1500 resumes normal operation. 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. [. . . ] You must have an RA number before you can obtain service at the factory or an authorized service center. Pack the subwoofer in its original packaging, including protective wrap, endcaps, and box. When you call for the RA number, please let Tech Support know if you need new packaging. Mackie is not responsible for any damage that occurs due to non-factory packaging. [. . . ]