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Re: 2.0 Ch usb powered Speaker system buzzing
Hi, check all the connections,cables and replace as needed. sounds like a ground loop.also your power outlet may not be grounded or the power adapter may have issue, this could case the condition you describe.try other power outlet. you can get filters ,conditioners at like radio shack or places like that.. hope this is useful. good luck!
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You could have an earth loop which causes a hum/buzzing sound.
Is your computer and powered speakers plugged into different mains?
Connecting amplifiers and speakers to different power sockets will create earth loop problems
This can be fixed by using a single power board connected to a single mains power socket, then connecting all the computer components and powered speakers into this one power board.
The 2200 uF capacitor in the power supply has gone bad and the humming is a 60 Hz from the rectification of AC to 18 vDC. Either get a new power supply or take apart the power supply and replace the bad cap.
I've had the same problem and I think I've solved the problem. I noticed that they were fine when I first turned them on. After a awhile the blue light would flicker and static would start. I figured there might be some connection so I unplugged my speakers, took off the thin rubber from bottom and removed the 3 small screws. I carefully pulled the circuit board down, spotted the led light and snipped it off. I put everything back together, double stick taped the rubber piece back on, plugged it back in and have been listening static free for hours. Yippee, no more room full of screaming babies (that's what static sounds like to me)! By the way, I'm no expert. I just have a very strong aversion to static. Good luck, Beth
i had the exact same problem which eventually spread to all speakers i took it to local repair guy, he was able to resolder the power board seem to fix all didn't really cost me much cheaper thean shipping back to spherex or whoever
I suspect that what you are hearing is the 60 cps of the mains. If the humming sound is coming the subwoofer itself, then it is possible that you have a defective/leaky capacitor in the power supply section of the subwoofer. In the subwoofer, if the buzzing sound is coming from anywhere else other than the speaker itself, then it is possible that you have a loose transformer again in the power supply. Unless you are comfortable working with testers and soldering irons, I would suggest an electronics technician who should be able to diagnose and fix it for you.