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Old 12-04-07, 08:04 AM   #6 (Link)
 
brucek
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Re: Made system changes, now have ground loop hum?


Quote:
How would I go about finding out what you've asked?
Unless you're comfortable with using a meter and sticking the leads in wall sockets, I won't bother telling you.

An easy method to ensure the QSC and receiver are on the same leg is to simply plug them into the same receptacle and see if the hum goes away. If it does, then that's the problem. If not, to ensure that it was indeed the addition of the QSC to the mix that is causing the hum, you could temporarily plug the QSC into a 'cheater' plug and see if the hum goes away. If not the problem lies elswhere.

You could also try using a set of RCA to XLR cables with the shield lifted (between the receiver and QSC) to see if that clears the problem.

brucek


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