Wiring preamp inputs. Shielded cable or not?

[catman]

G'day all, for wiring the inputs of phono preamps and the like I've always believed that it was good practice to use shielded cable, however I get the impression that many use twisted wires or even two untwisted wires.

I actually have tried this and it works fine, however wouldn't (shouldn't) proper shielded cable be better to prevent noise pickup and /or prevent crosstalk. Any thoughts? Regards, Felix (vk4fuq) aka catman.

 

[westend]

Your thoughts are spot on, Felix. I've seen it done both ways, with shielded cables and just with individual wire. Depending on the sensitivity of the close-by circuits, there should be a need to keep the signal intact and that means some sort of shielding.

 

[sachu888]

Your thoughts are spot on, Felix. I've seen it done both ways, with shielded cables and just with individual wire. Depending on the sensitivity of the close-by circuits, there should be a need to keep the signal intact and that means some sort of shielding.

I have used twisted pair of CAT5 cables in B1,CNC phono,LDR volume control etc.It has a very good quality copper inside and very easy to solder to PCB.I don't like shield cable for this purpose they are of poor quality and very stiff.

Regards,
Sachin

 

[oiseaux]

Properly shielded cables? Of course!
Not using them is an experiment.
Cheers!