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RE: "Try putting a Ferrite bead/filter on just your unbalanced AC earth GND line on the power line"

Hi Hukk,

"This sounds like a neat idea. Does it improve sound quality noticeably?"

In some cases it can. In my last residence it did make an improvement in noise reduction without hurting dynamics but in my current residence, it made it worse by slightly muting the dynamics.

"If so, can you describe more closely? I wouldn't know where to get one, and I am not sure what you are telling me to connect it to."

Your local Radio Shack carries them, Snap-together ferrite Choke Core | Catalog #: 273-105, and place on the earth GND wire either inside your power conditioner if you use one, or you may have to place it right before the line enters the outlet receptacle that feeds your system. The GND inside your PC will be a Green wire and the GND line at the receptacle with be bare copper in most cases. Be sure to remove power, and verify there is no power via a lamp or a DVM, before popping the hood on your PC or working on the receptacle.

I have also found improvements in noise reduction by placing the ferrite beads on household appliance power cords as these are a huge source of RF contamination into your homes power lines. Start with your fridge and then move to the microwave. Place the bead around the whole power cord about a foot down the power cord from where it enters the appliance.

Hope this helps,

~kenster

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