Output jack with Shielding cable

[carter840]

I'm looking for some detailed help on how to wire an output jack using shielded cable. I am confused because the line that goes to the sleeve should be a ground wire, but then I'm also grounding the outside of the shield. I've read through quite a few posts, some which mention that using shielded cable for the output jack doesn't add any value in a single coil, but still I'd like to try it and am unsure how to proceed.

1. Assuming that I am going to be using a shielded cable, am I also using a typical wire (cloth wire in this case) for the other contact on the output jack?

2. Which connection at the jack gets the shielded wire the negative (ground in this case) or the positive).

3. If one of the connections is ground and the other is + signal could I just use a single shielded cable both of the output jack connections and connect the outside shield to the negative jack connection and in the inside wire to the positive side?

 

[LutherBurger]

3. If one of the connections is ground and the other is + signal could I just use a single shielded cable both of the output jack connections and connect the outside shield to the negative jack connection and in the inside wire to the positive side?

Yep. That's the ticket.

 

[darkforce]

The sleeve of the jack is ground, so you can use the shield for the ground connection and use the core for the signal (tip).

Best regards
Johannes

/* edit: LutherBurger was faster */

 

[carter840]

Okay thanks so much for the replies and the very clear picture. I have some of the shielded wire just like you used and also some that is a bit more "fancy" with the shielding exposed on the outside (GAVITT single conductor wire). I was planning on using the fancy type, but that would mean that one of my wires (the ground) is exposed.

Also I should note that I have lined the inside of all cavities with copper foil. I do mean all cavities (even the drill holes between cavities are lined with copper). So the socket hole is lined with copper as well, and will make contact with the elctro socket cup.

Any issues with that?

 

[DavidP]

Also I should note that I have lined the inside of all cavities with copper foil. I do mean all cavities (even the drill holes between cavities are lined with copper). So the socket hole is lined with copper as well, and will make contact with the elctro socket cup.

Any issues with that?

Be careful that the hot lead lug connection on the jack does not short out with the socket hole shield -- its been a common problem for me (which only manifests itself after you've installed everything!) as the stock hole diameter is usually pretty low on clearance with the jack. My simple solution is to wrap a some electrical tape around the lug right back to where it joins the insulating wafer. I also cover the socket facing side of the tip connector as that can also come into contact with the socket hole after you plug in.

 

[R. Stratenstein]

The exterior woven bare metal ground/shield is of no concern, unless it's placed carelessly and contacts a "hot" lead, terminal, etc.