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