Lngevin 602C line transformer schemo needed

[Walter66]

Hello,
got a pair of Langevin 602C balanced line isolation transformers.
In the Langevin catalogs, there is no connection table to be found of their transformers.

Did they gave a hint on this topic to their customers?

No Langevin amp used this input trans, so could someone please provide advise on how to properly connect it?

Would be much appreciated. Many thanks in advance.

 

[emrr]

Ohm it out, make sense of the terminal #s. There are widely followed standards to compare against.

 

[Walter66]

Ohm it out, make sense of the terminal #s. There are widely followed standards to compare against.

You mean it could be comparable to UTC LS-30 mixing trans?

 

[Walter66]

Measured and tested the transformers.
Wondering if that Langevin schemo could be correct, although it would mean primary and secondary have different ohmic impedances?
That's different to what a Triad HS-56 measures. There both are equal. Is that necessary for a line repeater trans?
From the pic, it looks like it has been connected that way.

 

[emrr]

Normal effect of winding one layer over another, and possibly different wire gauges too. Agreed it’s a bigger diff than expected, but what’s the measured level diff through it?

 

[Walter66]

Levels with sinus showed that it works as repeater. Of course, it dislikes square waves.
Datasheet says insertion loss @1000 Hz=1.6dB

 

[ruffrecords]

A 10KHz square wave is hardly a fair test for any audio transformer.

Cheers

Ian

 

[Walter66]

A 10KHz square wave is hardly a fair test for any audio transformer.

Cheers

Ian

On ETF 2009 they did test output transformers with a frequency of 10 kHz as well.
http://www.tubesoundelectronics.de/tabellen/messtabelle_ot_etf2009.pdf
Don't want to go further with those tests, because they just should show that it works as a line repeater.

 

[Brian Roth]

Levels with sinus showed that it works as repeater. Of course, it dislikes square waves.
Datasheet says insertion loss @1000 Hz=1.6dB

Maybe a loading resistor will tame that square wave?

Bri

 

[Walter66]

Maybe a loading resistor will tame that square wave?

Bri

Yes, sure it will do.

 

[jokeramik]

Use a combination of a capacitor and resistor in serie. jensen transformers do the same.
Best regards!