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Basics of Troubleshooting Sound Systems

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Basics of Troubleshooting Sound Systems. by Al Keltz. Divide and Conquer. Murphy's Audio Law #10: "The probability of having sound system failure is ...

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Basics of Troubleshooting Sound SystemsPage 1Technical ArticlesBasics of Troubleshooting Sound Systemsby Al Keltz Divide and Conquer Murphy's Audio Law #10: "The probability of having sound system failure is inversely proportional to the amount of time remaining until the performance." We've all experienced it: there were problems with load in or setup time is short the system is setup with only a few minutes to spare and of course something works improperly or not at all. Although the first instinct might be to take a "shotgun" approach and start checking plugs connections cables etc. in a random fashion (i.e. "panic") a triedandtrue troubleshooting method will almost always find the problem with less effort and in a shorter amount of time. The most basic troubleshooting technique (after "is it plugged in?") is the "Divide and Conquer" method. This involves identifying the good parts of the system as well as figuring out which parts have failed. Not only can these working sections be eliminated as the cause of the problem but they can also be used to test other parts of the system. For example a mic channel at a mixer is dead while others are operating properly. The good news here is that you can use one of the working channels to isolate the problem. First unplug an input connector from a working channel on the console and plug it into the dead channel. If the bad channel on the console now works the problem must exist before the console back toward the mic. If it's still dead the problem has to be after that channel's input (bad channel dirty insert jack wrong assignment etc.) Either way about half of the system is eliminated. Let's assume the first condition above the console is OK. The remaining part of the system can be divided in half again by doing same thing at the stage end of the snake. That is after switching the cables back to where they were on the console plug a cable from a known working mic into the ...

Source: www.whirlwindusa.com

 

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