Siemens U274 Mic preamp

[sismofyt]

<dopehead modus on>

You can get blue ones. They sound much better!

<dopehead modus off>

:green:

 

[opacheco]

Just a note on that schematic, none of the units I got use SST 117/1 transistors. Don't even know what the hell those are  :?  They all have BCX 45s instead. Any TO-5, hfe=40 will do I guess. Also don't mess with the trannie wires, they're quite fragile  :shock:

Hi sismofyt,

Do you have any information about the BCX 45 Transistors??......I am in the U273 repair process and I will need a couple of them. Any info will be appreciate .

Opacheco.