Speaker buzzing - LG DU-42PX12XC 42 in. Plasma HDTV

your power supply 5volt is under powered with filtering issues.

A lound buzzing sound is an indication that the Driver (transistor) for the amplifier final is bad. This is not so much a buzzing and it is extreme in loundness.

Is the buzzing sound like power line buzz or something else? Web search "buzzing audio cable" for ideas that match your symptom.

Passive speakers don't buzz in the absence of a signal that makes them buzz. Look for a single source doing it, specific cabling loose, power cords near signal wires.

If you turn the unit on with no input and get a loud buzz, and when you put signal to it and you cannot hear the music but the buzz (Probably more like a hum). Then most likely the amp is blown.

i have a similar problem, and i've seen loads of stories about the same problem from these speakers, it's a shame because otherwise these speakers are pretty good :(

The speakers seem to pick up interference, especially when the volume is low, they also sometimes give out periodic buzzes, but this could be individual faults with equipment.

May be a short somewhere, speakers always have a little white noise and buzzing, usually nothing you'll notice.

Not a Velodyne product

I have mac notebook and i experience an occasionally static and a pop sound via my studio monitors (speakers) , didn't do it when I first got my yamaha's

The buzzing noise is being heard probably because there is another electronic device around that's using radio waves to function. (Such as a cell phone, a cordless phone adapter or a wireless router. Even microwaves and ceiling fans can give off these sounds.)

My advice would be to try and move around or turn off some appliances in your room that may give off radio waves.