Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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Re: Testing for DC presence on AC mains

Posted by kenster (A) on January 13, 2007 at 15:29:43

In Reply to: Testing for DC presence on AC mains posted by madisonears on January 12, 2007 at 17:46:17:

There is a very REAL possibility U have DC riding on your AC line and it can vary in intensity throughout the day and this very well could be your flucuation of transformer hum intensity.

There are products on the market that specifically address removing DC from the AC line and it just might be worth a shot for U. I have included links if U want to peruse it further.

Of course, as others have mentioned, it might be the transformers themselves. I have one vintage amp that hums like hell when all others are dead silent when powered by the same Balanced Power source
just as an example.

The PS Audio unit has a 30 day money back policy and this would be a good first step in troubleshooting your problem.

Cheers,

~kenster

• http://www.psaudio.com/products/upchbmoreinfo.asp   (Open in New Window)

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