Mixingdeskproject out of Siemens Eurocards (HELP) photos

[Geert Heyrman]

Hello Guys,

I've been surfing a lot on this messageboard but just enlisted myself. A while ago I got the chance to buy several siemens eurocards for little money. I don't have any schematics of them and I hope you guys could help me here. This is what I got

24 Distribution amplifiers one into six.... Label says Siemens PM-VV 6 AUsg. +15 dBM/24V Here is a picture of this unit:

http://www.image-monster.de/?img=Distributionamplifierkl1414f26bJPG.jpg

I also got 4 Mischverst. PM-MV Trafo-Eing./24V(RK470)

http://www.image-monster.de/?img=Mischverstarkerklc99953f3JPG.jpg

With this last I can probably make two stereobussamps.... I guess.
I need the schematics for these eurocards as otherwise it's too hard to make anything out of it. What I want to do is make some kind of mastering rack desk. Deu to the distribution amps i can make two to six different submixes. For the neutrality I could use a studer mixing amp also on eurocard from my studer 903 desk to mix all the six stereogroups. I still have a lot of work thinking out what I want to do but I wonder if someone has schematics of these siemens cards. I can't find them anywere. Anyway The next picture gives an idea of what I intend to make:

http://www.image-monster.de/?img=mixingdesk51773574jpg.jpg

I really hope you guys can help me.

Kind regards from Belgium,

Geert

 

[Geert Heyrman]

Any ideas on a design.... please do make suggestions. I'm pretty new to this stuff but I learn fast. I was also willing to use those rotary lightmeters around the knobs as done with the protools control, so that you can quickly see what setting you have dialled in in a midnight sessions. :grin: Anyone experience with that?

Geert

 

[Geert Heyrman]

Hi Kubi,

Thx for the reply. Yes indeed they are the ones you say. According to the guy I bought them from they came out of one mixing desk. Do you have the schematics? Aren't they any good? I might offcource use them for parts. But maybe there is a way to upgrade them. I have enough to experiment on :roll: Any way, the schematics would be highly appreciated.

Kind regards,

Geert

 

[Geert Heyrman]

What if I upgrade the low cost LF353N "Wide Bandwidth Dual JFET Input Operational Amplifier" with a better one? There are four used in the distributionamp. I have read that the LF353 is pin compatible with the standard LM1558 witch allows to immediately upgrade the overall performance of existing LM1558 and LM358 designs. Does anyone have a suggestion with regard to a better Dual JFET Opamp?

I assume the Picatron RÜP 266/1M is good quality? Is there a need to upgrade that one?

Kubi do you know how the colouration of these distributionamps are?

Kind regards,

Geert

 

[Geert Heyrman]

Hi Kubi,

Thx for the reply. I was ale to find out were the audiochannels are on the card. But I'm left in the dark to how to power this thing up.

Kind regards,

Geert

 

[Geert Heyrman]

Hi Kubi,

Thx for the info on the trafo's. I'll probably have to disassemble them for the use I have in mind. But maybe that's not a bad thing. I'll have a look at this forum on what design I'll use. I might go for a discrete design for the distributionamp. I'll have a look at the board. I guess the other board I showed is usable. But again the lack of schematics is holding me back. I can't even find the pinlayout on the net for the haufe transformers. ( Haufe RK430 and Haufe RK470)

Anyway Kubi thx a lot for the info I'm a lot closer to next step to perform.

Kind regards,

Geert