Marinair 1448 in Cadac

hello

i have a cadac c391 card ..don't know what is for ...there is 2 t1448

except this topic,
http://www.groupdiy.com/index.php?topic=21774.0

does someone have more info to adapt these transformer ?

thank you

Those are most likely line in transformers.

Measure the DCR and or alternatively run some AC through them and see what the ratios are.

Mark

I believe that is a driver card for the phasemeter in a vintage Cadac desk.
The transformer is a line in one but I do not have any specs on it.

If you ever want to sell the card please let me know since I could use it as a spare for my desk.

Dennis

1448 is also the line i on an Audiox. iirc. Same as Neve line in, perhaps?

I think Audix and Tweed also used them. 

I meant Audix, not Audiox!


  perhaps the can is of a different material?



    ANdyP

These are the same as in Audix 35102 - line in xformers, very similar to 31267.


Thomas TK provided this over at Aurora Audio:

http://www.auroraaudio.net/dcforum/DCForumID1/445.html



The T1448 was also used as a line-in transformer in the Audix 35102 channel amp.
Marinair T1448
This is a line bridging transformer. Designed specifically to isolate equipment with previously unbalanced input arrangment, this transformer may be inserted without serious loss of level.
10k/2k5 : 9k6/2k4 ( 2 x 5k : 2 x 4k8 windings )
Secondary load: 9k6 (rated)
Input impedance: 10k
voltage ratio-insertion loss:1dB
Frequency response (600ohms source, 9k6 load): +/-0,3dB (20Hz-15kHz and -0,5dB at 20kHz
Distortion: <0,1% (above 40Hz) and < 0,01% (500Hz-10kHz)
Squarewaves: No overshoot, no ringing,

Thomas "TK"
Vintagedesign
Sweden

hello
thank you for your answers
pins 2 and 3-4 ...172 ohm
pins 5 and 34 ...174 ohm

pins 10 and 8-9 ...27,2
pins  7 and 8-9 ...27

API...it's not that i don't want to sell the card but i have it for 4 years and it's not mine so i just want to test the transformers
maybe it's worth to copy the layout
to be fair i have some electronic knowledge but i 'm newbe with ratios and transformers,i just built jensen di and reamp.

can i make a circuit i could plug direct to a eq ,effect ,or preamp ...or i didn't understand ? to make it more versatile .
i have to read and learn more but good advices are always welcome.

That says T1447 . . . . .not T1448 . . . .

oupps !!

i have 2x1447 and 2x1448 on the board
http://picasaweb.google.com/catchreboot/CADAC#

reboot said:

oupps !!

i have 2x1447 and 2x1448 on the board

Click to expand...

It's most likely in the same general family.

Measure the DCR of the coils, that will at least give you a clue what the impedance and ratios are.

Mark

Can I alert you to this thread regarding the T1447. http://www.groupdiy.com/index.php?topic=6717.0

I did end up using the 4 x T1447 in a 1272 type mic amp, it works nicely & gives you a little more gain.

Rob Flinn said:

Can I alert you to this thread regarding the T1447. http://www.groupdiy.com/index.php?topic=6717.0

Click to expand...

Great info there Rob, search IS your friend.  8)

Mark

thank you A LOT for these great infos...