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Ferrite Rings?

post #1 of 10
4/4/02 at 7:58pm
Thread Starter 
What are they? Where do you put them? Where can I find more info on them? I tried google......but not much came up.


Something about they helping to lower the noise floor? How expensive are they? Anybody help me out? LMK

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post #2 of 10
4/4/02 at 8:10pm
Look on your monitor cable at the end, see that big hump? Thats a ferrite clamp (search for "ferrite clamp" or "ferrite core"). It helps suppress radio frequencies. You can put them most anywhere, with cables being a good place to put them (at the ends).

Look for them on places such as radioshack, mouser, and digikey, they are cheap, maybe $0.10-$1 each, varies with size and all.

Though, some do not like the effect of ferrites, depends on your system though.
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post #3 of 10
4/4/02 at 11:21pm
Here are a couple of threads with more info. Check them out.

one
two
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post #4 of 10
4/4/02 at 11:41pm
can someone tell me where I can find one that will fit on a larger (12 ga or so) power cord?

I looked around at digikey but the descriptions are kinda vague...

Driftwood
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post #5 of 10
4/5/02 at 2:47am
I was thinking of getting one for my girlfriend...but then I remembered I don't have one.
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post #6 of 10
4/5/02 at 2:59am
I know that Audioquest and Vesalabs make ferrite RFI blockers that fit around cables. I can't remeber where, but I also saw an item called a Power Wrap. It's an RFI/EMI blocker that coils around your power cables. I remember this item due to the fact that they claim that different location on the same cable will have different effects on the sonics of that cable. If you are interested in the Versalabs Red Rollers, call GC Audio in San Antonio, you can get the phone number from the web site, www.gcaudio.com. In my system, I use Ensemble and Virtual Image power cables, Kimber Select speaker cables, and Straightwire Crescendo IC's, and haven't tried any form of ferrites, but I may have to.... I LOVE TO TWEAK!!!!

Also, if you're looking to upgrade your power cables e-mail me at zspradlin@hotmail.com I may be able to help you out.
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post #7 of 10
4/5/02 at 3:06am
Thread Starter 
Quote:
Originally posted by zspradlin
Also, if you're looking to upgrade your power cables e-mail me at zspradlin@hotmail.com I may be able to help you out. [/B]
ygpm
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post #8 of 10
4/5/02 at 9:19am
The branded ferrite cores (like the Audioquest ones) are ridiciously expensive! Don't even bother with them (I think it is like $5 for one). Just get it from an electronics place for <$1 each.
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post #9 of 10
9/5/02 at 10:19pm

I got mine...

...off of the special USB cable that came with my Digital8 camcorder. They are two TDK ferrite clip-on cylinders, model ZCAT 2035. I have one around the end of my digital cable and one on the end of the power cable to the headamp. I just did this tonight, so I reckon it'll take time to quantify differences.

- Sir Mister Matt
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post #10 of 10
9/8/02 at 9:25am
Quote:
Originally posted by chych
The branded ferrite cores (like the Audioquest ones) are ridiciously expensive! Don't even bother with them (I think it is like $5 for one). Just get it from an electronics place for <$1 each.

Last time I saw the Audioquest ones advertised they were £40 for a pair, thats just over $60 for you yanks. Sheesh. Talk about getting taken for a ride.



I always found the ferrite rings particularly useful in reducing unwanted RF interference on TV sets when I was operating ham radio from here.

For them to be of any real use though, they need to be wound around cables in a correct manner for them to be of most effect. I always found that around 8 turns covering 270 degrees of the ring to be best. That way you actually turn any common node signals back 180 degress on itself and null it out almost completely but leaving the wanted signals intact.



A better sollution is to use a line filter as you're likely to get more benefit from one of those than from using ferrites.


For a low cost tweak a ferrite is fine. It doesn't cost much and doesn't require much in the way of taking your kit apart and is totally reversible.

Have fun!





Sound As Ever.
Listening to Frankie Goes To Hollywood - Welcome To The Pleasuredome
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