Siemens U273b

ToniTonmann · Nov 29, 2017

Hello,

does anyone know the U273b comp tuchel connector, who could help me with the pin allocation ? I found a schematic at

http://audio.kubarth.com/rundfunk/getfile.cgi?f=%3E%2C34Q%2C3DX%2CC%24R-E%5DU%2BW-I96UE%3BG-%3F%3D3%28W%2CV%28N%3C%261F%0A

but i'm technically an amateur and don't understand all of it (ok, i'm completely lost actually :

).
There are two outputs - i guess i should use the +6 dB ? But which pins are hot/ground ? Also the 24V : "1" is ground and "13" is + ? The same for the input: pins 4-6, but which is which ?

Is this the right counterpart ?
http://www.akzent-audio.de/vintage-gebrauchtgeraete/steckverbinder/polzahl/13polig/145-amphenol-tuchel-13-pol-steckerleiste-t2706-fuer-siemens-w295/-emt-etc-gebraucht

Any help would be highly appreciated ! Thank you!

gyraf · Nov 30, 2017

..you can't deep-link directly to Kubi.

The connector you show is a male, most probably the one you already have in the unit. You probably want the matching connector (but check for yourself first - these are getting expensive lately)

Jakob E.

ToniTonmann · Nov 30, 2017

oh, i see the link doesn't work. Here's the schematic and a pic of the connector on the 273:

Murdock · Nov 30, 2017

Try to search for "Tuchel Amphenol T 2707". This should be the connector you need. There is one on German ebay right now for 20€.
I'm no expert either but I would connect it as follows:

PSU 24+ -> 13
PSU 0V -> 2
audio input hot -> 4
audio input cold -> 5
audio input shield -> 6 (?)
audio output hot -> 11
audio output cold -> 12
audio output shield -> 1

and connect 1 and 2 at one point together with the chassis you're putting the unit in.

But maybe wait till someone more knowledgeable can confirm this as I'm not quite sure about the input shield...