neumann body swa for mods

[anna loog]

hallo everybody
i am a collector from old stuff and found four swa body,s  from neumann with two kma capsule with fets inside
i dont have the time to mod things
hear is the deal
i am searching for someone who has the knowledge!!! and time to build some other capsules on these things
two for you!!! and two for me!! for the work and time
no money involved!! yes i can sell them but i dont need the m
i am more curious how these things sound with some other capsules
i am willing to pay for capsules!! if necesarely!!
greetings from holland
jan bloemsma

 

[rodabod]

Maybe try Dale Ulan here. But don't tell his wife I told you.

 

[anna loog]

hallo roda

i didnt know how to start such a thing like this
mayby he is reacting
the thing is i love these amps i worked a lot with them
but the capsule always irritated me
these bodys deserved somthing else
i have some capsuls from a akg414eb
but they need to be rescind
greetings

jan

 

[helterbelter]

Cool.... I'd like to do this, but it would be my first micmoddingproject. It can't be too hard I suppose.

I'd have to know what kind of capsules you'd want to use for it. And do you have a schematic of these ?

greetings,
Paul

 

[rodabod]

Apparently the SWA is simply a 6dB amp (with balancing transformer) which acts as a supply for the KMA when powered from48V. It does not contain the necessary impedance converter which is contained in the original KMA mic.

Therefore, this is not a simple job. I'd almost recommend selling them on Ebay and buying something else to be honest.

 

[anna loog]

yeh thats right,,, but i have already a  collection
in the capsule, the kma or kml are fet,s inside
like the pm750 from gefell
i dont have a schematic
output is high enough for a standaard pre amp
jan

 

[mad.ax]

As Rody said, the swa is just a 6 dB amp with a DC supply, so the original schemo won't help you much if you want to use it with anything else than the KMA.

From the Neumann spare parts documentation, it appears that the output transformer of the SWA bears the same reference than the KM83/84/85.
That makes it the most interesting component of the SWA.

You could then use the KM84 schematic as a starting point:
http://recordist.com/ampex/schematics/neumann/km8345sch.jpg

Axel

 

[anna loog]

yes thats the reasen why but!!! the only thing thats  needed is a capule, and a fet, or tube as impc like every mic
jan