[pix] [finished] Germanium Preamp

[[silent:arts]]

kubi is very busy with other things at the moment 

however once I have finished some other stuff I will come back to this project  :

 

[briomusic]

this would be a great project to celebrate the 51Xness of the new racks  ;D

 

[[silent:arts]]

this would be a great project to celebrate the 51Xness of the new racks  ;D

yes  ;D ;D ;D
needs to be done.
we already have some famous customers for 51X Racks.

 

[VoiceOverMike]

Any exciting news!!

 

[Gus]

Any builds with two output devices and not four?  I think two of the proper specs would be better and less parts.

 

[emrr]

In practice, the 2 output RCA has plenty of drive.  The original all germanium 4 output RCA makes no mention of special output matching.  It's simply two identical output stages in parallel. 

 

[[silent:arts]]

Any exciting news!!

no. did you see kubi around here lately?
but once I find the time I'm back on this for the 51X format.

 

[VoiceOverMike]

Bump

 

[adamboon]

be patient ;D

You're killin' me here!

 

[Kid Squid]

NICE !!!!

 

[haima]

8) any news volker?

 

[[silent:arts]]

8) any news volker?

sooner or later ;D

 

[haima]

I know how it is...

I can wait... lots of projects on the go and not much electronics time for me. Just wanted to check it's still going to happen... one day!  ;D

 

[[silent:arts]]

will happen next, first I will release the OLA51X

however, I will do a little redesign for the jensamp51X.
other HiZ jack, other relays, nothing fancy.
makes more sense for stocking some parts

a new batch of 50 Haufe input transformers for this project is already ordered,
but before I can order some Haufe RK240 I will need to sell some Pikatron iron with the OLA51X first
transformers are an expensive business ...

 

[adamboon]

Is there an available schematic?

Any links to any schematic I have found with germanium seems to be dead.

Adam

 

[[silent:arts]]

http://audio.kubarth.com/jensamp/

 

[zebra50]

Thanks for this. I did a P2P germanium thing a couple of years ago with some OC71 transistors, but I never got the noise floor down. I may give your design a go instead.

Does Not Work Properly inside Perusha's Cases

I found the trick with these cases is to drill out the paint from al the screw holes and use crimped washes. Suddenly the case conducts/screens properly and the hum goes away!

 

[[silent:arts]]

... I may give your design a go instead.

just for the records, this is not my design, it is Sir Kubis

and my guess is he never used one of that mentioned cases ;D ;D ;D
but this is a different story

 

[[silent:arts]]

Will it work?
Will it smoke?

;D ;D ;D

 

[Rybow]

Well I for one hope it works! Unless by smoke you mean "smoke every other pre out there!".

Very cool project.