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Guest earl of sodbury

Wiring XLRs for balanced question

38 posts in this topic

I have a set of male-male silver XLRs previously used for power-supply purposes which I wish to convert signal cables between a balanced source and balanced amp.

These are wired pin1 to pin1, pin2 to pin2, and pin 3 to pin 3.

For the change of use I need to replace 1 male connector with 1 female connector.

For signal transmission, are the connections still the same?

It might seem obvious, but the interweb is as usual unhelpful, and I don't want my listening pleasure interrupted by sparks and puffs of blue smoke... :(

churz, eofs

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Pin 1 is generally the ground (=earth) connection. Pins 2 and 3 are the "hot" (=centre pin of an RCA) and "cold" (=outer sleeve of an RCA, =signal ground) signal phases.

Some kit has 2 and 3 reversed (there's no proper standard) which led to a big barney on here about whether having these swapped over (inverted phase) would be audible or not...

I'd wire straight through unless there is anything in the manuals of your kit to suggest otherwise.

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Thanks MiB - not having the manuals is part of the "problem"... :Not Sure:

churz, eofs

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The correct termination Earlis 1 to 1, 2 to 2 and 3 to 3 (The XLR connectors should have the pin numbers moulded into them)

I have seen these in all sorts of configurations in specialist power supplies but for audio use it's Pin 1 = GND, Pin 2 = "+phase" or hot, Pin 3 = "- phase" or cold.

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Effem wrote:

The correct termination Earlis 1 to 1, 2 to 2 and 3 to 3 (The XLR connectors should have the pin numbers moulded into them)

I have seen these in all sorts of configurations in specialist power supplies but for audio use it's Pin 1 = GND, Pin 2 = "+phase" or hot, Pin 3 = "- phase" or cold.

Some Victor CDP's are marked up as 1=GND, 2=Cold, 3=Hot. :( Hence the discussion of absolute phase.

I think some other older Jap stuff is the same.

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Thanks chaps, let's hope the French and the Koreans will talk to one-another :upgrade:

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Iv made several balanced wires for me and a mate always wired the to the corresponding number 1-1 etc and they all work fine tookmy Mithril'stoDuvet's bake off and they worked ok there too.

Ah your using the same make as my dac/pre Stello I take it?

Happy soldering:D

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hifinut wrote:

Best thing to be 100% is to email april music and quote your serial number that way they should have the info: info@aprilmusic.com

Top man: thanks! :^

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Have emailed both manufacturers now - which is of course what I should have done in the first place :doh:

Really should go to bed earlier - but up till3 againlast night listening... :stereo:

churz, eofs

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earl of sodbury wrote:

Have emailed both manufacturers now - which is of course what I should have done in the first place :doh:

Really should go to bed earlier - but up till3 againlast night listening... :stereo:

churz, eofs

Too much of this :rockin::22::Bouncey:leads to this:zzzz::zzzz:like a kid in a toy shop I know what it's like listen to my collection many times when good kit or tweaks done just to hear more details or better soundstage etc:Coool:

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I think you need to make sure that you use 110 Ohm cable if you want a good balanced signal (i.e not75 or 50 Ohm) I stand to be corrected.

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Puffin wrote:

I think you need to make sure that you use 110 Ohm cable if you want a good balanced signal (i.e not75 or 50 Ohm) I stand to be corrected.
Thats the standard for digital.
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Ant wrote:

Puffin wrote:
I think you need to make sure that you use 110 Ohm cable if you want a good balanced signal (i.e not75 or 50 Ohm) I stand to be corrected.
Thats the standard for digital.

Earl wrote:

I have a set of male-male silver XLRs previously used for power-supply purposes which I wish to convert signal cables between a balanced source and balanced amp. For the change of use I need to replace 1 male connector with 1 female connector.

So he already has balanced wire he just wants to change one end pair of plugs to be female do people read these forums properly?? before replying.:nup:

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