Question about Creek 5350SE Amplifier

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Annoying hum Just hooked up my LCD tv, dvd player, digital cable box, PS3 and Cd player to my Onkyo Pre and am getting a humming sound thru my speakers...I'm not at all technical...so please speak simply. Thanks

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The first answer was a correct one as a first/last resort. In other words if any of your devices are three pronged and your using a 3 prong to 2 prong adapter-DON'T.

In my experience as a sound engineer (30+) years, a hum is caused by a "ground loop". This is caused by one of 2 reasons. There are 2 true earth grounds or a cable is broken. Since you are at home (and I'm taking it for granted it is a newer house/apartment), there will be one true earth ground. By the way- a true eart ground is when A 10 foot pole (ground rod) is sunk in the ground and is attached to the ground terminal at the outside breaker box. You can easily check this by going outside and look for a single wire that is clamped to the ground rod. If you are in an old house where there is only two pronged outlets you will have to do your own ground. Ask another question for that and I'll send detailed instructions for creating your own true earthground

Which means it is a cable. The most common device to cause a g. loop is one that records also. Power down the receiver, take the cable for the cd off (from the receiver), turn on, see if hum. Go through each set until you isolate the cable that is bad.

Hope this helps.

Jeff

Posted on Jan 08, 2008

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Something else to consider is that you should keep all your mains wiring as far away from your audio wiring as possible, and never coil any mains cable around when in use. Once everything is installed & in place, some cable ties will help you achieve this.

The positioning of your speakers may also be causing this problem if they are very close to any electronics.

Posted on Jan 08, 2008

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First of all touch the metallic body of the amp with your palm after removing your footwear and find out if there is a reduction of the hum sound. If the hum is reduced that means there is no proper earthing .Check whether the power supply is properly earthed.If there is no earth connection in your home wiring there will be hum.You can ask your electrician to solve this problem and then switch on the system.
If the problem persisits check the audio cable for any damage and replace the cable with a new one.
Sometimes the hum may be caused by a tubelight which is taking power from the same plugpoint you are using for your player.this can also cause noise.

Posted on Jan 08, 2008

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