Cable question

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sherman5150

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Fantastic Info here Dave! Thanks for sharing it all with us...

I'm getting some Neutrix connectors per your recommendation, but I have a question about instrument cable fabrication. I was surfing the other day and came across a site that suggested making instrument cables with balanced (Mic/XLR) cable wire (2 leads, 1 shield) instead of the normal (1 lead, 1 shield).

The method explained with the balanced cable was to solder one lead to the + and the other to the -... Repeat on other end of cable... Then, on the source side of the cable ONLY, solder the shield to the -. The reasoning for only doing this on one end of the cable was to avoid a ground loop. They said that using this cable would greater shield your signal from AC hum, cellphone interference, etc. I can't find the site now, and searching has come up empty.

Is anyone else doing this? Thanks in advance for any help.
 
its not going to prevent ground loops as you're still connecting the shield and gnd together on one end.. gnd is still gnd on the other.. but could help against noise.. i used to wire all my rigs like this, but don't anymore, it takes more time, and i've never seen it proven "real world" that it does anything.. FWIW, all the Evidence audio cables are wired this way.. basically, its using the shield of the cable for only a shield, and not to carry a ground signal.
 
Yeah it helps only in a few applications. I don't bother but i do wire snakes like this now. Dave
 
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