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Author Topic: Spring vs cup terminals, do I just not get out much?  (Read 3503 times)

Ben Johnson

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Spring vs cup terminals, do I just not get out much?
« on: April 16, 2019, 07:14:33 PM »

I ordered some panel mount XLR-M connectors, NC3MDL-BAG.  They're listed as having solder cup connectors. What I got is pictured below, with terminals that have a center pin surrounded by a spring.  I've never seen this before, although don't get out of my corner of the world that often.  What is this?  Searches for combinations of Spring Terminal XLR Neutrik Solder Connector haven't turned anything up.  Did I get an incorrect part, or is this some new solderable solution?

Thanks,
Ben



« Last Edit: April 16, 2019, 07:20:29 PM by Ben Johnson »
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Rob Spence

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #1 on: April 16, 2019, 07:19:06 PM »

Looks to me to mate with a PC board.

I suspect you got what you ordered and what you want is a different part number. But, I really don’t know.


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Geert Friedhof

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #2 on: April 16, 2019, 07:30:02 PM »

NC3 would imply 3 contacts, but i see 4...
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Rob Spence

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #3 on: April 16, 2019, 07:38:09 PM »

NC3 would imply 3 contacts, but i see 4...

The shell of the XLR is the 4th.


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Ben Johnson

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #4 on: April 16, 2019, 07:40:22 PM »

NC3 would imply 3 contacts, but i see 4...

The 4th pin gives continuity to the shell if desired, it's definitely a 3pin male on the front.

Ben
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Geert Friedhof

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #5 on: April 16, 2019, 07:44:04 PM »

Hmmm strange....

https://www.neutrik.com/en/product/nc3md-l-bag-1

Look at the drawing. Seems different to me.
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Tim Hite

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #6 on: April 16, 2019, 08:14:42 PM »

Looks like a knock off. Is the branding on the front correct? Should say Neutrik and Lichtenstein on there and have a hologram sticker on the bag.

I ordered some panel mount XLR-M connectors, NC3MDL-BAG.  They're listed as having solder cup connectors. What I got is pictured below, with terminals that have a center pin surrounded by a spring.  I've never seen this before, although don't get out of my corner of the world that often.  What is this?  Searches for combinations of Spring Terminal XLR Neutrik Solder Connector haven't turned anything up.  Did I get an incorrect part, or is this some new solderable solution?

Thanks,
Ben


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Ben Johnson

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #7 on: April 16, 2019, 08:24:03 PM »

Looks like a knock off. Is the branding on the front correct? Should say Neutrik and Lichtenstein on there and have a hologram sticker on the bag.

It does say Neutrik and "Made in Lichtenstein."  They came 10 mounted in a carboard sleeve, plus 2 floating loose, in a larger ziplock (so no hologram).  This is from Fullcompass, so it seems unlikely that they'd send counterfeits.

And just to be clear, I'm capable of and probably will just return these for the ones I expected.  But I've never seen this method of connection before and now I'm getting curious.

Ben.
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duane massey

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #8 on: April 16, 2019, 08:32:59 PM »

Almost looks like a strange "wire-wrap" design?
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Tim Hite

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #9 on: April 16, 2019, 09:08:47 PM »

All the panel mount connectors I have ordered from Neutrik have had solder cups for 3 terminals and a tab for the shell ground.

Only place I saw an image similar to yours is an ad for NOS connectors on eBay

The DLX is the updated connector. Order NC3MD-LX-BAG

It does say Neutrik and "Made in Lichtenstein."  They came 10 mounted in a carboard sleeve, plus 2 floating loose, in a larger ziplock (so no hologram).  This is from Fullcompass, so it seems unlikely that they'd send counterfeits.

And just to be clear, I'm capable of and probably will just return these for the ones I expected.  But I've never seen this method of connection before and now I'm getting curious.

Ben.
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Kevin Maxwell

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #10 on: April 16, 2019, 09:22:18 PM »

I have seen those terminals a lot on Neutrik XLR connectors I have been given to solder. Not my favorite but usable. I usually just cut off the chassis terminal. 
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Robert Lunceford

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #11 on: April 16, 2019, 10:02:31 PM »

I ordered some panel mount XLR-M connectors, NC3MDL-BAG.  They're listed as having solder cup connectors. What I got is pictured below, with terminals that have a center pin surrounded by a spring.  I've never seen this before, although don't get out of my corner of the world that often.  What is this?  Searches for combinations of Spring Terminal XLR Neutrik Solder Connector haven't turned anything up.  Did I get an incorrect part, or is this some new solderable solution?

Thanks,
Ben



I have a Whirlwind Medusa that I purchased in 1986 that uses those spring solder terminal XLRs. The XLRs are branded as Whirlwind. That snake is the oldest piece that I still have in service. It’s been used on almost every job I’ve done the past 33 years
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Mark Cadwallader

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #12 on: April 16, 2019, 11:40:18 PM »

I guess that I would think of the interior of the spring as cup that fully surrounds the wire, so you don't have to hold the wire "down" in the cup to solder it. But maybe I'm just really wrong....
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Mike Caldwell

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #13 on: April 17, 2019, 08:11:11 AM »

I have a Whirlwind Medusa that I purchased in 1986 that uses those spring solder terminal XLRs. The XLRs are branded as Whirlwind. That snake is the oldest piece that I still have in service. It’s been used on almost every job I’ve done the past 33 years

Same here.

Would not be my first choice in solder connections, but workable.

Scott Helmke

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #14 on: April 17, 2019, 09:56:49 AM »

I have a Whirlwind Medusa that I purchased in 1986 that uses those spring solder terminal XLRs. The XLRs are branded as Whirlwind. That snake is the oldest piece that I still have in service. It’s been used on almost every job I’ve done the past 33 years

Whirlwind does seem to like those springs, because it's on most of their chassis XLR connectors. 

Maybe it's a way to turn a PCB pin into a solder cup?
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Brian Adams

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #15 on: April 17, 2019, 12:20:11 PM »

I don't love spring terminals, but I've had to work with them a lot and they're OK. Why Whirlwind loves them so much I'll never know.

In any case, that doesn't look like any NC3MDL I've ever seen.
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Ken Braziel

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #16 on: April 17, 2019, 01:26:18 PM »

Seems like it could be a form of strain-relief, so if there's any play between the exterior where the connection is mounted and the board it's soldiered to the springs would give. Also vibration... just a thought
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Mike Caldwell

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #17 on: April 17, 2019, 02:16:52 PM »

Seems like it could be a form of strain-relief, so if there's any play between the exterior where the connection is mounted and the board it's soldiered to the springs would give. Also vibration... just a thought

By the time you solder them they are pretty much solid.

Like Scot said they look like a PC mount XLR with a spring cup on the pins.

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Re: Spring vs cup terminals, do I just not get out much?
« Reply #17 on: April 17, 2019, 02:16:52 PM »


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