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Pinout of Audio Ltd MiniTx 4 pin Lemo?


Julian P
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might it be that you changed 1 and 2 by accident?

I wired them and was wandering about that shitty sound :-)

then I wired

1 - sound

2 - ground

3-4 bridge

 

and everything was fine

 

or I misunderstand the pin numbers.... ?

the one with the circle (the last one) is number 4 and ccw you get back until number one

 

well, but it works now :-)

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might it be that you changed 1 and 2 by accident?

I wired them and was wandering about that shitty sound :-)

then I wired

1 - sound

2 - ground

3-4 bridge

 

and everything was fine

 

or I misunderstand the pin numbers.... ?

the one with the circle (the last one) is number 4 and ccw you get back until number one

 

well, but it works now :-)

Strange that pin 2 is the ground as Pin 1 is normally the ground unless the wiring is for negative bias where the connections are as you ended up with.

Eric

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looking at my hitech post it note, i have, looking at the solder side, with the location key at the top.

top left, pin 1 - ground,

bottom left, pin 2 - signal

bottom right, pin 3 - connect to pin 4

top right, pin 4 - connect to pin 3.

 

 

but as Eric, has just asked, what mic are you soldering up?
have followed this configuration for COS11s and DPAs

 

but then, if it works, go with it.

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The manufacturer is in Europe, it's the weekend so they're closed and it's fixed now. >>

 

Oh come on Eric. If someone wanted to work during the weekend to solder some lavs, he COULD have asked Audio Ltd for the info beforehand. 

 

The OP did not seem like it was an emergency that cropped up DURING the weekend. He's had 'time to search the internet' as well. 

 

 

For the record, I have always got a response from this company the same day most of the time or the next day. 

 

-vin

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what do you think works faster on friday afternoon - asking some fellas or waiting for email response? I had an intensive web search before, couldn't find anything related to the minitx. 6 pin lemo I could find. Would have thought to find some infos on their homepage or in the manual... but what do I tell... help me or leave it, I don't force anyone to answer my post

 

back to topic: everything worked fine, all lavs working. DPA, Countryman, Sennheiser, tx powers on and off like it should when plugging the connector in/out

 

this was the picture I was referring to the pin numbers:

lemos_pins_stecker.jpg

 

as there aren't any numbers on the 4 pin lemo, I was only orientating on the "last" pin with the circle around it. And with that picture in mind, 

pin 1 was sound

pin 2 ground

pin3/4 bridge for on/off

 

hope, I did everything all right, but sound is good anyway and on/off works as well.

To go sure, I'm going to still write an email to Audio and ask for the pinout

 

 

Thanks guys

 

 

and Senator: thanks for your helping words ;-)

I'm no student nor a child anymore. I know how to do my homework

 

@ rich: thanks for your fast help! must say, I'm a little confused now watching the picture:-) like your descriptions (and it makes sense to me that the pin with the circle is ground), I would have done it the opposite way?! but everything seems fine..?!:-D

 

I still have one spare lemo and a waiting Countryman B6. I'm going to do it as you described and see what happens, then I'm sure.

I report back later

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okay. because of all this confusion, 

i have just pulled out a Lemo 4 pin insert and plugged it into an Ambient Eumel that i use to test mics wired for the mini tx.

the pin with the circle is pin 1.

 

you can confirm this a few ways.

plug the solder insert into the mini tx, taking care to line up the red mark on the transmitter with the key on the insert.
if you listen to a receiver tuned to the transmitter, you will hear a buzz when you touch pin 2.
and if you put a voltmeter across pins 1 and 2, you will see a voltage. and with a continuity tester, you should see a connection between pin 1 and the chassis of the transmitter.

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back from soldering:

the way you described still didn't work for me. Now I think, I know why: I had the key on the opposite side of the red mark!! - don't ask me why..

I think that's the reason why it worked for me the way I did it. Just leave them now as they are... my eyes are hurting because of the small connector size!

 

I must say, the good old 6 pin Lemo, I like best. More easy to solder :-D

 

thanks for your efforts!

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