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Using headphones in Audio Out.

Postby Psypher » 07 Mar 2013, 08:36

Hi there!

I have tried using a headphone in the audio out and everything seems to be good except that it only plays on one of the channels (can´t remember if it is left or right).

I have actually tried to have the jack plug pulled a little bit out and then both channels are playing!! DOOH

What kind of converter-cable (either a cable sold or homemade) would I need to make the mono-signal heard in both left and right channel of my headphones??

Kind regards

Psypher

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Using headphones in Audio Out.


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Re: Using headphones in Audio Out.

Postby mjbrands » 07 Mar 2013, 23:12

Psypher wrote:I have tried using a headphone in the audio out and everything seems to be good except that it only plays on one of the channels (can´t remember if it is left or right).

Audio out isn't meant for directly connecting headphones too. Also, it is a mono output. If you can get the right volume with your particular headphone, I don't see a reason why you couldn't use it as a headphone output though (might not work well with all headphones due to volume issues) :D

Psypher wrote:I have actually tried to have the jack plug pulled a little bit out and then both channels are playing!! DOOH

What kind of converter-cable (either a cable sold or homemade) would I need to make the mono-signal heard in both left and right channel of my headphones??

If you can solder you could easily create an adapter yourself. You'd need a male 6.35 mm mono jack and a female 6.35 mm (or 3.5 mm if that is more convenient for you) stereo connector (and some wire with two or more conductors/treads in it). The tip on the male mono jack should be connected to both the tip and the ring contacts on the female connector. I hope this makes sense.

Anyway, it might be cheaper (and more convenient) to get something from eBay, DealExtreme.com or something like that. (DX doesn't seem to have anything suitable.)

Maybe something like this:
http://viewitem.eim.ebay.dk/35mm-STEREO-to-635mm-MONO-Jack-Audio-Cable-Adapter-Converter-63mm-14-Inch/251147614147/item (3.5 mm headphone socket)
http://viewitem.eim.ebay.dk/635mm-STEREO-to-635mm-MONO-Jack-Audio-Cable-Adapter-Converter-63mm-14-Inch/280960780127/item (6.35 mm headphone socket)
http://viewitem.eim.ebay.dk/35mm-STEREO-Jack-Female-Socket-635mm-14-MONO-Male-Plug-Nickel-Adapter-/350729367823/item (3.5 mm, metal version)
http://viewitem.eim.ebay.dk/Metal-635mm-Stereo-Socket-to-635mm-Mono-Jack/380299989083/item (6.35 mm, metal version)

And there's plenty more cheap Chinese stuff on eBay... I doubt you can make it yourself for that amount.
Last edited by mjbrands on 07 Mar 2013, 23:27, edited 1 time in total.
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Re: Using headphones in Audio Out.

Postby Psypher » 13 Mar 2013, 06:00

Thanks for the detailed answer.

I actually thought some of the same but I wasn´t all sure about tip, ring and sleeve and if it was "healthy" doing so.

Why did Clavia make this a-little-too-cheap-drumsynth, instead of putting a headphone out on the back or on the front? :(

The weird thing is, that even though I soldered a cable and short-circuited the two channels - I still only get an output on the left channel!!!?

So now I am totally confused and thinking about if I am drunk, cable broken, broken plug, brain gone into sleep-mode, etc.!? :?

But thanks alot, but VERY strange that I can´t get this simple thing to work.

Best regards
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Re: Using headphones in Audio Out.

Postby mjbrands » 13 Mar 2013, 21:14

What cable did you create? Mono male plug (Nord Drum) and female stereo plug (headphone)?
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Re: Using headphones in Audio Out.

Postby Psypher » 18 Mar 2013, 06:08

Yeah, I tried it twice to be sure about working female socket, working soldering, etc.

You can look at my "pretty" picture that I have attached. I am quite sure I made it like that, but I am very confused about why it dosn´t work....? :shock:
Attachments
cable.jpg
My lovely picture of my cable and soldering.
cable.jpg (11.26 KiB) Viewed 3648 times
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Re: Using headphones in Audio Out.

Postby mjbrands » 18 Mar 2013, 21:37

Psypher wrote:but I am very confused about why it dosn´t work....? :shock:

So am I, to be honest. The way you cabled it seems fine to me. Do you have some other sound source you could plug it in to, just to rule out the headphone as a source of the issue?
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Re: Using headphones in Audio Out.

Postby Psypher » 18 Mar 2013, 22:06

I must admit, that I actually havn´t tried another headphone in my "home-soldered converter cable", but the reason why I havn´t is that I use the headphones all the time both before and after trying this, so I would be EVEN more confusd if that would work.
I will try it though and continue my confusion. :-)
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Re: Using headphones in Audio Out.

Postby wartaler » 19 Mar 2013, 13:29

Hi,

I'm interested too, - quite puzzling indeed,
I decided to go through everything step by step:

if I'm correct the ND actually has a 3 connector socket, which is normally used for stereo, or balanced mono signals,
but according to the specs the ND has unbalanced mono output, so:

---------ND socket:---------stereo jack:
tip:-----signal---------------left
ring:----not connected-----right
sleeve: ground--------------ground

Connecting your stereo headphones directly to ND will indeed result in a signal in the left channel only.

If you pull your headphone jack a little bit back, you hear sound in both ears. I didn't understand why at first, but I think it is thanks to the fact they used a stereo socket:
I think by pulling it back, the tip of the jack becomes connected with both tip and ring of the socket, while the ring of the jack is also (still) in contact with with the ring of the socket.
In other words: the signal from the ND becomes connected with both left and right of your headphones.

So, now your cable: mono jack (that will go into the ND) to a female stereo jack (to plug your headphones in)
I think you should indeed connect the tip of a mono jack - with both the tip + ring of a stereo female jack (see picture below, basically the same as your drawing..),
(= shorting tip and ring of the female jack) -

You say the result is signal only on one side, - are you sure you didn't connect the tip (or sleeve) of the jack with both ring and sleeve of the female jack (= shorting the ring and sleeve of the female jack)?

did you check your cable with a resistance meter, to check what is connected with what, and checking if there are no unwanted connections made...?

I assume you did it right, - so why doesn't it work?!

I ordered a dedicated mono-jack-to-stereo-female adapter - one as was suggested above .. (I hate soldering)
I will let you know if it works!

Albert
Attachments
mono to stereo cable.jpg
mono to stereo cable.jpg (89.5 KiB) Viewed 3582 times
Last edited by wartaler on 25 Mar 2013, 19:30, edited 13 times in total.
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Re: Using headphones in Audio Out.

Postby wartaler » 29 Mar 2013, 14:23

I GOT IT WORKING!!!!

here are my findings:

... I bought the "mono jack to stereo female jack converter" - although advertised as such - it doesn't work, because it is actually an 'unbalanced to balanced' 'converter',

that is: they connected sleeve of the jack with the ring and sleeve of the female jack - which results in sound in your LEFT ear only!

Then I bought some stuff to make the cable myself:

-male mono jack
-unbalanced 'microphone' wire
-female stereo jack

I connected the tip of the jack with both tip and ring of the female jack - and sleeve to sleeve, as in above posts - and it works!!!!

So, my advice to all who want to use headphones on the ND: - don't buy any 'mono to stereo jack converter' unless you are 100% sure it is wired as above, otherwise: DIY !!

Cheers,

Albert
Last edited by wartaler on 30 Mar 2013, 01:18, edited 2 times in total.
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Re: Using headphones in Audio Out.

Postby mjbrands » 29 Mar 2013, 17:51

Thanks for the update. I also had never realized there was a difference; I have some of those, but I never tried to convert from a mono to a 'stereo' (double mono?) signal.
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