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Old 6th August 2004, 02:20 PM   #1
ble0t is offline ble0t  United States
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Default Shielded Wiring

Just wanted some input from the forum on this...

1) What type of shielded wire is the best to use? Is 22awg coax a good choice? Is so, where is a good place to purchase some?

2) When connecting the shield to ground, should it be connected to chassis ground? Or can it be run to a ground connection anywhere (i.e. on a board)?

Thanks in advance!
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Old 6th August 2004, 04:12 PM   #2
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Default Where do you plan to use it?

The usual place where shielded wires is used ( in audio) is for carrying low level signals like the input signals. The most obvious one is from the input socket to the preamp board .
Shielded wire comes in several grades.
If you have no idea what to buy and find it hard to locate a supplier, you should just buy twin core shielded wire for microphone use . Use one core as the ground lead and one as the 'hot' lead. At the input end connect the ground lead to the earth on the input socket. At the amplifier end connect the ground lead and the shield to the board's input ground terminal.
The outer shield is not connected at the socket end.

Two companies that makes very good cable for professional audio use are Belden and Canare. Your supplier would be able to suggest which type to use.

Check out the following for technical info on cables.

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Old 6th August 2004, 04:15 PM   #3
ble0t is offline ble0t  United States
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Thanks much! That was exactly what I was looking for
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Old 11th August 2004, 01:46 AM   #4
Apex Jr is offline Apex Jr  United States
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Default Shielded Wire

If it's not to late, missed this one...
I stock lot's of shielded wire:
Canare GS 6 sort of like Guitar cord size or RG 58/59 Coax
at .25ft have it in Red and Blue color.
Teflon shielded in 20 Awg and 22 Awg 1 cond .25ft .20ft
RG Coax in PVC and Teflon
multi-conductor PVC/Teflon shielded too...
Steve @ Apex Jr.
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Old 11th August 2004, 05:34 AM   #5
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Depending on what you are doing. Belden and Canare have good choices for reasonably priced.

For internal wirings I like Belden RG-147. You can find it at or

It is a mini-Coax and for short connections it is great.

For like guitar/instrument or general cable applications, Canare GS-6 or GS-4 work great. Belden, Mogami are also great inexpensive choices.

You should probably hook it up to the signal ground. So if the signal ground is the chassis, then do the chassis. If it is on the board, use the board. Often the chassis ground and board ground is the same with the signal ground.
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