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Why do my speakers make a noise when I touch the plug?
The human body is electrically conductive so touching the conductor (the plug or even the cable itself in poorly insulated cable designs) of a cable that is connected to a speaker will effectively produce a circuit between us and the speaker. This circuit causes the speaker to produce a hum.
What causes a hum in speakers?
An audio problem called a ground loop is a common cause of hum problems. Slight differences in the AC voltage levels between two pieces of equipment creates an audio hum . Ground loops in home stereos typically occur when turntables or other sources are plugged into different electrical outlets than the amplifier.
What should I do if I hear hum in my speakers?
Disconnect all inputs. Remove the cables connecting the receiver, power amplifier, or device powering your speakers. Only the speaker cables, loudspeakers, and AC plug powering the unit should now be connected. Does the hum go away?
Can a CD player be the source of Hum?
If the answers are yes to questions one and two, it’s likely that one of your sources (like a CD player, turntable, video feed), is the source of hum. Remove that piece from the receiver, amplifier, or integrated and the system hum should now be gone.
How to find and fix hum in 3 Easy Steps?
JOIN THE HI-FI FAMILY How to find and fix hum in 3 easy steps July 10, 2013 by Paul McGowan If your stereo or video system has a hum or buzz coming from the loudspeakers, there are several easy steps you can take to discover what the cause and cure will be. If you need a more extensive procedure, click herefor the extended version.
What causes 120Hz Buzz and 60Hz Hum?
There are two basic types: 120Hz buzz, typically caused by ground loops, and 60Hz hum, typically a result of poor shielding, cable problems, or close proximity to strong magnetic fields. To determine which of these you have, listen to the two examples. 60Hz hum caused by close proximity to other equipment or cables problems: