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Build O2 Amp with XLR Output?
tehprairiedog
post Jan 11 2013, 20:56
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Hi everyone!

I was wondering with DIY amps like the O2 if it's theoretically possible to use a 3 pin XLR jack instead of 3.5mm or 1/4 inch? I'm sorry if this is a really stupid question, but I haven't really been able to find an answer. If it isn't possible, what is the difference between 3 pin XLR and 1/4 inch that makes this impossible?

Any explanation would be greatly appreciated smile.gif
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Glenn Gundlach
post Jan 11 2013, 21:43
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QUOTE (tehprairiedog @ Jan 11 2013, 11:56) *
Hi everyone!

I was wondering with DIY amps like the O2 if it's theoretically possible to use a 3 pin XLR jack instead of 3.5mm or 1/4 inch? I'm sorry if this is a really stupid question, but I haven't really been able to find an answer. If it isn't possible, what is the difference between 3 pin XLR and 1/4 inch that makes this impossible?

Any explanation would be greatly appreciated smile.gif


You can use an XLR but why do this? When folks see an XLR connector they assume it's one channel of balanced audio. Yours will work but may cause some questions because it's unusual in that it's 2 channels of unbalanced audio.

XLRs are sturdy, heavy and they lock in. That's great for mic cables on a stage but sort of clunky for headphones.

G
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tehprairiedog
post Jan 11 2013, 21:54
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Thanks for the reply! I know it's kind of unusual, but I just like the way XLR jacks look biggrin.gif I guess using mini XLR would be slightly more practical. Thanks again for the help!
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tehprairiedog
post Jan 11 2013, 22:04
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Oh! I have one more question: Would using a regular vertical pc mount mini XLR jack work? Or would something more round about like connecting a panel mount jack with wires to the board be easier? Thanks for any help!
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2tec
post Jan 11 2013, 22:14
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QUOTE (tehprairiedog @ Jan 11 2013, 13:56) *
I was wondering with DIY amps like the O2 if it's theoretically possible to use a 3 pin XLR jack instead of 3.5mm or 1/4 inch?

I've also considered this but haven't found a credible source that thinks it's worthwhile. What I do find is stuff like,

"Within home stereo equipment, which in general is all unbalanced, it makes sense to use unbalanced cable through out the system. Using balanced cables within this scenario does not make a large amount of sense, since the transitions between the two types of audio will outweigh the benefits." ~ http://soundinfo.wikidot.com/ballanced-vs-unballanced-audio

Also some general info:
http://en.wikipedia.org/wiki/Balanced_audio

and maybe this is what you need?
http://en.wikipedia.org/wiki/DI_unit


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Censorship reflects society's lack of confidence~Potter Stewart
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