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manunkind
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Ferrite rings/chokes on speaker cables

Suddenly, my speaker cables started to pick up radio interference. It is very low, barely noticeable- still, it drives me crazy.

I purchased some ferrite rings and placed them on the speaker cables near the speakers- the interference vanished at once. However, it seems that the sound isn't quite the same- i can't figure out how exactly, but it does sound different

Anyone else has any experience with ferrite rings?

geoffkait
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Since the “audio signal” in

Since the “audio signal” in speaker cables comprises (alternating) electric fields and magnetic fields produced by moving charges it is reasonable to assume ferrites (magnets) can affect the audio signal. By the same token static electric fields can and do affect the audio signal in cables. Placing ferrites on power cords, on the other hand, generally produces positive results by acting as RF filter. There is no “audio signal” in power cords.

MattJ
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You might try shortening the

You might try shortening the speaker cables if you can. That should reduce the antenna-like receiving area of the cables.

geoffkait
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manunkind
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Shortening cables

My speaker cables are ridiculous 10 meters long, and the only way to shorten them is to move my amp- but my PC with most of the music has to remain where it, and it contains the bulk of my music collection. I will have to run a 10 meter USB cable or a 10 meter TOSLINK/optical...

Kal Rubinson
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There are alternatives. I

There are alternatives. I run 10m balanced XLRs from my DAC to my amps but, if necessary, I can run a 10m Corning Optical USB for such problems.

manunkind
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USB

Thank you. Although my amplifier has ballanced inputs, my DAC is an incertable card and is, essentially, a part of the amplifier. The long USB cae is an idea I might go with- for some reason I was holding a mistaken belief that in order to have an extended USB reach I'd need some sort of external power supply (I'm learning now that I was wrong).
Thank you!

Kal Rubinson
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I must add that you might

I must add that you might need an additional supply with the Corning cable, depending on whether your DAC uses the +5V line on the USB connector to recognize that something is plugged in. Some do, some don't.

For those that do, I use an UpTone Audio USB Regen to supply the needed +5V. Most of the time, it's not needed.

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