User manual MACKIE SRM450V2

[. . . ] SRM450v2 Active Sound ReinfoRceMent SPeAKeR uSeR'S MAnuAl IMPORTANT SAFETY INSTRUCTIONS 1. Donotblockanyventilationopenings. Installinaccordancewiththe manufacturer'sinstructions. Donotinstallnearanyheatsourcessuchasradiators, heatregisters, stoves, orotherapparatus(includingamplifiers)thatproduceheat. Donotdefeatthesafetypurposeofthepolarizedorgrounding-type plug. Apolarizedplughastwobladeswithonewiderthantheother. [. . . ] It's okay for the PEAK indicator to blink occasionally, but if it blinks frequently or continuously, either turn down the signal level at the mixer or other signal source, or turn down the SRM50v's LEVEL control. Wear hearing protection if you are close to the SRM50v playing at high levels. 9 CONNECTIONS The SRM50v has a female XLR input that accepts a balanced or unbalanced mic- or line-level signal. When connecting a balanced signal, be sure it's wired per AES (Audio Engineering Society) standards: XLR Hot (+) Pin Cold (­) Pin Shield (Ground) Pin 1 There is also a male XLR connector labeled THRU. This allows you to connect more than one SRM50v to the output of your mixing console. Simply plug the signal source output into the first INPUT jack, and patch that speaker's THRU jack to the next INPUT jack, and so on, daisy-chaining multiple speakers (see diagram on page 6). A general rule is to maintain a load impedance ten times or more than the source impedance to prevent excessive loading on the source. For example, if your mixer has an output impedance of 10 ohms, then you can daisy chain up to sixteen SRM50vs. This is a load of 150 ohms (SRM50v input impedance=0 kohms; 16 of these in parallel=150 ohms). Since microphones typically have a higher output impedance, you should limit daisy-chaining from a mic source to two SRM50vs (see the diagram on page 7). The THRU jack is wired straight from the 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. PLACEMENT The SRM50v active speakers are designed to sit on the floor, a tabletop, or to fit on a standard tripod speaker stand. You can lay the cabinet down on its side and use the SRM50v as a floor monitor. The asymmetrical trapezoidal shape of the cabinet provides a perfect angle for aiming up toward performers from the front of the stage. When used for monitor applications, we recommend engaging the LOW CUT filter. If you are setting them up outdoors, make sure they are under cover if you expect rain. Do not place it closer than two feet (0. 6 meters) from any TV set or computer monitor. Do not place any magnetic audio or video tapes or computer discs near the SRM50s. Room Acoustics The SRM50v active speakers are designed to sound as neutral as possible; that is, to reproduce the input signal as accurately as possible, monitoring the sound rather than changing it. Room acoustics play a crucial role in the overall performance of a sound system. However, the wide highfrequency dispersion of the SRM50v helps to minimize the problems that typically arise. Balanced XLR Connectors Top 900 900 Dispersion up to 20 kHz 10 RIGGING Here are some other placement tips: · Avoid placing loudspeakers in the corners of a room. This increases the low-frequency output and can cause the sound to be muddy and indistinct. This, too, increases the low frequency output, though not as much as corner placement. However, if you do need to reinforce the low frequencies, this is a good way to do it. · Avoid placing the active speakers directly on a hollow stage floor. [. . . ] To locate your nearest service center, visit www. mackie. com, click "Support" and select "Locate a Service Center. " Service for Mackie products living outside the United States can be obtained through local dealers or distributors. If you do not have access to our website, you can call our Tech Support department at 1-800-898-11, Monday-Friday, normal business hours, Pacific Time, to explain the problem. Tech Support will tell you where the nearest factory-authorized service center is located in your area. drivers are located. Dimensions 15. 4 in/390 mm 14. 8 in/376 mm 26. 0 in/660 mm 14. 8 in/376 mm CARE AND MAINTENANCE Your Mackie active speakers will provide many years of reliable service if you follow these guidelines: Avoid exposing the loudspeakers to moisture. If they are set up outdoors, be sure they are under cover if you expect rain or you live in Washington. [. . . ]