Question about Audio Players & Recorders
The possible problem at your case is a "ground loop". Although you didn't mentioned all the devices on your system, let's try to solve it. Unplug every mains power socket from the mains and isolate the ground connector so that can not reach the mains ground connector (sorry but I don't know where are you from, for example if your mains power plug is a "shuko" type, use isolating tape over the ground metal on both sides). This has to be done on every device power connector; not at the mains power cable that is connected at the wall socket. Check the results. Usually this trick works in order to elliminate the "ground loop effect" that is causing this low hum that you can hear to. If this solves your problem I suggest you to either use the isolation tape on all devises' power sockets except the amplifier (that can be connected with the right way) or use a custom made multi power socket without using the ground connectors for all the devises except the amplifier.
In case of a problem or clarification, don't hesitate to post me a reply before rejecting my answer.
If you are satisfied, accept my solution.
Thanks and regards
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Posted on Nov 09, 2010
It's the hum of the mains: the electrolytic capacitors inside the power source of the amp have aged, they dried so their capacity has lowered so they are no longer capable of filtering the current properly.
No need for a new amp, just replace the capacitors - less than $25 for all of them.
Posted on Nov 08, 2010
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Posted on Jan 02, 2017
Tips for a great answer:
Sep 03, 2011 | Eltax Nova Theater System
May 24, 2011 | Coby DVD765 Theater System
Basic steps to check if the problem lies with the home theatre system or not.
1. First thought might be to conclude that your poor audio quality is caused by your speakers, before you immediately race out to purchase a new home theater surround sound speaker package, check the basic things first.
2. The problem might not be in the speakers, but in the amplifier or the connections from the amplifier. Checking and ensuring that the speakers are correctly connected on both ends is the first step.
3. After the connections pass examination, the next step is to check if the problem lies with the amplifier or audio speaker. Some of the lower end home theater systems come with low powered amps. Most often they do not supply sufficient power to speakers to produce the quality audio you desire. This may show up particularly if the room is large when the sound doesn't fill up the room.
4. To determine if it is indeed the amplifiers then hook up your speakers to a stereo; this generally will have a more powerful amp. If the speaker quality improves then the problem probably lies in your home theater amplifier.
If you cannot distinguish any difference, then your speakers could possibly be at fault.
5. Poor cable installation and audio speaker cable are another possible cause for consideration. Cheap workmanship can lower audio quality and home theater packages often come equipped with inexpensive poor quality cables.
6. If you experience problems with your theater system, it is always best to assume the problem lies in the connections between components first and then suspect the components themselves.
7. To ensure a great sound experience ensures that everything is properly connected, your amp is of sufficient power, and the cables are of high quality. If a person makes use of these basic easy precautions a significant amount of frustration can be eliminated. If your home theater sound isn't where you need it to be, use those hints as a blueprint as you analyze your system. If it really is time to look for new components, consider those directives as you make your next purchase.
Note : Check to see if the color is bad across all input sources. If so, make sure you have your Televisions' color settings set to your preferences. If everything looks good except, say, your DVD player, and it is connected to your TV via Component Video Connections (which is composed of three cables - Red, Green, and Blue), make sure they are matched up correctly with the Component (Red, Green, and Blue) connections on your TV. This is a common mistake as it is sometimes hard to distinguish the Green and Blue connectors if the lighting in the connection area is dim.
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