3 pin to 4 pin wiring

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I'm trying to wire up a 3 pin to 4 pin cable so I can send audio via a standard 3 pin xlr to a pair of beyerdynamic DT 108 com headphones which is 4 pin. I'm not getting anywhere. The standard from what I can see for com headphones is mic on 1&2 and phones on 3&4. I wired 2 hot to 4 and 3 cold to 3 but no luck. I've tried other combo's as well but no luck. Does anyone have any hints? Do I have to maybe change the 4 pin connector to a 3 pin on the headphones themselves?

thanks.

[TimS]

I'm trying to wire up a 3 pin to 4 pin cable so I can send audio via a standard 3 pin xlr to a pair of beyerdynamic DT 108 com headphones which is 4 pin. I'm not getting anywhere. The standard from what I can see for com headphones is mic on 1&2 and phones on 3&4. I wired 2 hot to 4 and 3 cold to 3 but no luck. I've tried other combo's as well but no luck. Does anyone have any hints? Do I have to maybe change the 4 pin connector to a 3 pin on the headphones themselves?

thanks.

Does the manual mention anything (if it has one)??
Try calling Beyer Dynamic customer service or their distributor - I'm sure they can help you!!
There would have to be somethingout there in the world wide waste of time (to quote rick)

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Yep, worth a shot, better get digging. I have scoured the net, always do for this stuff. I have the specs but just doesn't want to happen.

verified-Beyerdynamic DT-108/109
pin # Use Color For unbalanced wiring, tie yellow and green together and use shield for mic low. For a DT-108( single ear headset) the red conductor is used for the ear high.
The pin numbers shown are for an RTS BP-325 intercom beltpack. They are for reference only. The pin-designations for another device might be different.

1 mic shield Shield
2 mic signal (+) phase yel
2 mic signal (-) phase grn
4 ear signal left high red
3 ear signal left low brn
5 ear signal right high org
3 ear signal right low blu

[TimS]

http://www.bhphotovideo.com/c/product/3 ... e_for.html
I found this image of the cable you are looking at..
Hmm, I'm sure there will be help out there..
I'm looking for ya too..

[TimS]

You can find wiring diagrams in both these documents..
Happy soldering..

http://www.grips.net.au/default_files/dt108.pdf
http://www.grips.net.au/default_files/dt109.pdf

Tim..

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hey great find tim! i owe you one. Just need to get a close up of that cable wiring. You know I'm doing this for work as we were trying to cut down one of our mobile camera setups but continue to use the existing 3 pin wiring for audio monitoring. Then I saw the promo add for Idol coming up where they are doing this "we are the world" thing and a lot of them have what looks like com headphones without the mic and I thought "what a great idea" for vocalists. Certainly a good option for those who need one ear on and one ear off, much tidier.

cheers man.

[TimS]

hey great find tim! i owe you one. Just need to get a close up of that cable wiring. You know I'm doing this for work as we were trying to cut down one of our mobile camera setups but continue to use the existing 3 pin wiring for audio monitoring. Then I saw the promo add for Idol coming up where they are doing this "we are the world" thing and a lot of them have what looks like com headphones without the mic and I thought "what a great idea" for vocalists. Certainly a good option for those who need one ear on and one ear off, much tidier.

cheers man.

no worries - thats what I like about this forum - people are willing to help each other...
I may not always be the most knowledgable in audio, but I can snoop out info if I need too..
Hope it alll works out for you..
T..