clintrubber

Haufe AKM 2500 output-TX/module (looking for info)
« on: March 19, 2007, 08:50:12 PM »
Hi,

Here's a box with four Haufe 'AKM 2500' modules.

I guess they're more than just output-transformers.
At least the legending seems to indicate that there's more going on, especially at the primary.
Anybody knows more perhaps ?






In the same box also these fairly small input-TXs ('ST3152 '), don't know the brand. (Or who knows it's not a TX but some input-filtering like in the 'original Green' micpre)
 





A mail to Haufe is on its way as well, but probably a few people here have seen or used these modules...  

So any info appreciated!


Thanks,

  Peter


rodabod

Haufe AKM 2500 output-TX/module (looking for info)
« Reply #1 on: March 19, 2007, 09:25:14 PM »
Did you check Kubi's site?
Quote from: tv
punchy fat bastard chip

clintrubber

Haufe AKM 2500 output-TX/module (looking for info)
« Reply #2 on: March 19, 2007, 09:43:44 PM »
Quote from: "rodabod"
Did you check Kubi's site?

Thanks for the suggestion :thumb:  I had a quick look earlier today but didn't found anything of the above. Just had a closer look and while I still didn't found anything 'AMK2500' or 'ST3152', I'm now fairly sure the ST3152 is from Haufe as well.

Bye,

  peter

clintrubber

Haufe AKM 2500 output-TX/module (looking for info)
« Reply #3 on: March 20, 2007, 04:29:28 AM »
Quote from: "kubi"
Quote from: "clintrubber"
I'm now fairly sure the ST3152 is from Haufe as well.


It is.
Hi-Z (>600Ohm) low level (<2V) input iron as a first guess deriving it from the name. Ask Haufe, they answer quickly.

Hi,

Thanks for the info. Was surprised a bit by the small size of the input-TX but then again, this system (from a video-setup) might work with relatively low-levels.

I've mailed Haufe right after starting this thread, let's see what they can tell me.

Thanks!

  Peter

radiance

Re: Haufe AKM 2500 output-TX/module (looking for info)
« Reply #4 on: March 20, 2007, 07:10:29 AM »
Quote from: "clintrubber"
Here's a box with four Haufe 'AKM 2500' modules.

I guess they're more than just output-transformers.


They might be the little brothers of the Haufe AKM3000 ???
"Knowing that you are dreaming, however, does not automatically guarantee full rationality.
Then again, being awake doesn't ensure good thinking, either." -  Lynne Levitan

gyraf

Haufe AKM 2500 output-TX/module (looking for info)
« Reply #5 on: March 20, 2007, 10:18:00 AM »
Quote
Was surprised a bit by the small size of the input-TX but then again, this system (from a video-setup) might work with relatively low-levels.


Zero-field input technology? Look up the recent discussion here about NTP ZFT-modules..

Jakob E.
..note to self: don't let Harman run your company..

clintrubber

Haufe AKM 2500 output-TX/module (looking for info)
« Reply #6 on: March 20, 2007, 02:23:28 PM »
Quote from: "kubi"
Ask Haufe, they answer quickly.

You were right, got them e-mailed to me today  :thumb:

Here they are:

the output:
http://www.twin-x.com/groupdiy/albums/userpics/AKM2500a.pdf

http://www.twin-x.com/groupdiy/albums/userpics/AKM2500b.pdf


the input:

http://www.twin-x.com/groupdiy/albums/userpics/ST3152.pdf

clintrubber

Re: Haufe AKM 2500 output-TX/module (looking for info)
« Reply #7 on: March 20, 2007, 02:25:33 PM »
Quote from: "radiance"
They might be the little brothers of the Haufe AKM3000 ???

Looks like it! Hadn't seen such modules before bit it's of course a 'logic combination'.

Cheers,

  Peter

clintrubber

Haufe AKM 2500 output-TX/module (looking for info)
« Reply #8 on: March 20, 2007, 02:28:55 PM »
Quote from: "gyraf"
Quote
Was surprised a bit by the small size of the input-TX but then again, this system (from a video-setup) might work with relatively low-levels.


Zero-field input technology? Look up the recent discussion here about NTP ZFT-modules..

Jakob E.


Hadn't thought of that yet, but indeed.
For the ST3152 the Zsource = 300 Ohms, Zload = 200 Ohms.
I must trace the stuff around those TXs, let's see if that confirms it.

I'll check the NTP ZFT-thread, thanks for the suggestion  :thumb:

Bye,

  Peter

 

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