Belden DIY audio cables

[nigel pearson]

For what I think is the question? I would imgaine RF will always be in common mode into the speaker terminals. It is possble a well designed choke would do some good. Here is an example in the link. I think Farnell show a differential mode type by mistake. A common mode choke should have an equally and opposite reaction to the amplifiers output as it is in differential mode, as if it wasn't there ideally. Only error sigals in common mode are cancelled in the ferrite doughnut. Any RF differential mode should be reduced by the amplifer Zobel circuit if fitted ( 10nf + 8R or similar ).

http://uk.farnell.com/lcr-components/cf4/choke-common-mode-2x2-4mh-4a/dp/9520961

 

[mbrennwa]

Do-it-Yourself (DIY) Braided Speaker Cables

This link describes a 3m long braided cable. Has anyone tried to make longer braided cables without going nuts?

 

[nigel pearson]

I think twisted would be better. In the 1950's Tannoy suggested just a few turns. Naim Audio also as 2.5mm^2 2.5 twists per metre.

 

[Speedskater]

From a interference point of view, twisting is slightly better than braiding. However from a mechanical point of view, a braided flexible cord will hold it's shape better.

A ferrite choke can be placed near the amplifier terminals, to reduce high frequency RFI.

 

[DF96]

I suspect the popularity of braided audio cables comes from the fact that it looks pretty, and some people assume that if it looks pretty and can't be bought from Belden etc. then it must be good for audio.