weird looking trs plug - how do i wire this?

[Architorture]

i'm trying to make a few cables, and i have a trs plug i need to solder, but i've never seen one with contacts like it, so i'm a little confused on how you solder it.

does anybody see how you wire this? which connectors connect to which ring, and also how you physically solder it - it looks like i have to solder onto a flat surface, is that going to hold?

obviously, c goes to 3, but then is this right? 1 --> b & 2 --> A

thank you much for the help.

 

[cantsleep]

you're ready to go

 

[FallenAngel]

No DMM to check?

Logically, I'd say the bigger tab in the center (B) would to go 2 like in the Neutrik NP3X-B I used.

 

[error401]

My suspicion is that A is tip, B is ring and C is shield (ie ABC = 123). This is just a guess though, if you have a meter it should be trivial to verify and I always try to do this when a datasheet isn't available anyway, even if the pinout seems standard.

Soldering to a flat surface is a bit more difficult, but it'll definitely hold just as well. What I find is usually the easiest way to do it is to first tin the wire, then get a fairly large amount of solder on your iron, then hold the wire against the flat surface. Bring the molten solder ball down onto the wire and hold it there until it flows onto the surface to create a joint. This usually works much better than applying solder to the flat surface and remelting it while applying the wire; this technique usually results in only the bottom of the wire being part of the joint. I don't have the manual dexterity to hold the connector, wire, solder and iron all at the same time to use the 'standard' soldering technique.

 

[Architorture]

thanks for the quick reply.

i have do mm, i'll be getting my father's old analogue one next week. as a makeshift tester though, i connected the tip of my pc-speaker input to one part of the plug, then tapped a part on the other end with a wire - one i hit the right one, it makes a pop/hum. so i think i have it figured out 1-b, 2-a, 3-c.

any thoughts though on soldering to a flat surface - actually, to the outside of a curved surface?