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Switching/latching XLR sockets?

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kevinmcdonough View Drop Down
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    Posted: 09 February 2019 at 2:14pm
hey all

I know it's possible to get jack panel sockets with built in switching. When empty, the jack socket normally passes signal one way, but when you plug a jack plug into it breaks those connections and routs the signal another way.

I am looking for some XLR sockets that would do similar?  I realise in the jack's case that it's a little easier to do, its the actual physical act of inserting the jack into the socket that pushes some connections apart and breaks them, even as it then pushes other parts to connect and make the new connection, and that this isn't as easy with XLRs. 

But wondering if anyone knows of any XLR sockets that would do the same thing, to make a patch panel. Normally the signal would pass through the socket uninterrupted, but when an XLR is connected the signal instead travels along the new path.

K
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odc04r View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote odc04r Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 2:54pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Danielr Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 4:24pm
for the arrangement you're looking for, I've never seen anything like it. I don't think it exists. 

The last ones linked could be used to do some switching with something clever though. (Some sort of active matrix switch.) 

Though if you were doing that, you may as well wire your patch panel with normal (cheaper) xlr and add a push button switch to select front or rear. (Cheaper and more reliable than a home brew matrix router.) 


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Post Options Post Options   Thanks (0) Thanks(0)   Quote godathunder Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 6:04pm
Ive got a kramer programmmable matrix sat here not doing very much if its of any use to you. 16x16 balanced iirc
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kevinmcdonough View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kevinmcdonough Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 6:50pm
Originally posted by godathunder godathunder wrote:

Ive got a kramer programmmable matrix sat here not doing very much if its of any use to you. 16x16 balanced iirc

Hey guys, yeah I appreciate the offer of the Kramer, but it's a little much for what I'm looking for Smile

To give a bit more detail  it's for a patch panel for a wireless rack, and what I'm looking to make is a simple normalised patch bay. Normally the signal just flows through the patch internally, but if I want to insert a Mute stomp box into the path I just connect the in and out, and it breaks the internal pass through and sends the signal out and through the mute switch, and back in again.

I could of course do it with Jack's if it really comes to it, but XLRs would work far better  

K


Edited by kevinmcdonough - 09 February 2019 at 7:37pm
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efinque View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote efinque Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 7:06pm
I remember seeing XLR plugs with an on/off switch in microphones.. but I'm not sure whether they can be used for routing, as in that they'd work as a jumper.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote wires Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 7:28pm
Originally posted by efinque efinque wrote:

I remember seeing XLR plugs with an on/off switch in microphones.. but I'm not sure whether they can be used for routing, as in that they'd work as a jumper.


Ffs LOL
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Post Options Post Options   Thanks (0) Thanks(0)   Quote madboffin Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 11:59pm
I don't think those Neutriks will do the job. It looks like they only have one SPCO switch (and I assume your wiring is balanced so it needs two).

I think you will have to do it with the usual 1/4" jacks with Normalling switch contacts.


Edited by madboffin - 10 February 2019 at 12:00am
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odc04r View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote odc04r Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2019 at 11:24pm
Originally posted by madboffin madboffin wrote:

I don't think those Neutriks will do the job. It looks like they only have one SPCO switch (and I assume your wiring is balanced so it needs two).

I think you will have to do it with the usual 1/4" jacks with Normalling switch contacts.


I think it could be done with a single NC/NO switch but you'd need additional circuitry. Perhaps some DPDT minature relays to push an input signal one of 2 routes. Control signal would be generated from having an XLR inserted or not via pull up/down resistor arrangement. Question is do you want to go that far?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Danielr Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2019 at 11:49pm
actually...
It occurs to me, provided you only want full normalised (no option for half normalised or not normalised, you can achieve this... No options to patch for a side chain etc.


Xlr panel plug on back wired pin to pin (Hot-hot cold-cold, gnd-gnd) to a socket on front. 

Patch the hot pin to one side of a normally closed switch on the socket. 

Now patch your socket gnd-gnd, nc swich out -hot, cold to the switch contact on the return plug. 

Then return plug wire to the out plug, 
Gnd-gnd hot-hot cold -nc switch in, nc switch out-cold...


What I was missing before was, you want to switch both hot and cold between pass thru or interrupted, there is only one switch per connector, but practically you must use 2 connectors and so have both the switches that you need. 
(Hope that description makes sense.) 




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Post Options Post Options   Thanks (0) Thanks(0)   Quote MattStolton Quote  Post ReplyReply Direct Link To This Post Posted: 11 February 2019 at 10:07am
What is with you and mute switches!

I have done something where I used 5 pin XLRs. Pins 4+5 were shorted together on the cable ended plug, and when inserted, finished a circuit on a relay coil, routing this input (on pins 1,2,3 as normal) to do something.


This was for a system where they could plug a mic in anywhere in the room, and only wanted the corresponding 2 speakers, out of four corners, to come on. Why they wanted this eludes me, but whichever of the four walls you plugged the mic into, the corresponding "left and right" speaker corresponding to the mic socket were energised.
Matt Stolton - Technical Director (!!!) - Wilding Sound Ltd
"Sparkius metiretur vestra" - "Meter Your Mains"
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