Looking for Telefunken/TAB W395(a) & U374a schematics

[sismofyt]

I've looked, searched, begged, mailed, called, threatened people, you name it, to get 'em. no luck! I've tried vintagecity, Ollie, schmitronic, astroman.. all of them.

WHO have them? The W395 is a common eq so I guess someone might have a schematic. It's closely related to the W295, but not quite.

The U374a is Commando Amp (talkback), a pre/diode limiter/filter thing that's pretty obscure. It's got a couple of components I can't figure out. Never seen 'em before. I got three dead ones, I'd like to fix. Closely related to the U274, but more complex.

Help pluezze :grin:

 

[Learner]

[quote author="sismofyt"]I've looked, searched, begged, mailed, called, threatened people, you name it, to get 'em. no luck! I've tried vintagecity, Ollie, schmitronic, astroman.. all of them.

WHO have them? The W395 is a common eq so I guess someone might have a schematic. It's closely related to the W295, but not quite.

The U374a is Commando Amp (talkback), a pre/diode limiter/filter thing that's pretty obscure. It's got a couple of components I can't figure out. Never seen 'em before. I got three dead ones, I'd like to fix. Closely related to the U274, but more complex.

Help pluezze :grin:[/quote]

Hey welcome back shalima! :grin:

Yea, it would be interesting to see what's inside the W395. Is it a passive EQ?

 

[sismofyt]

If it's anything like the W295, it's inputbuffer -> active baxendale -> passive LCR midrange -> output amp. Nothing complicated 'cept those inductor values are missing. This is an extremly annoying trend on old gear... grr :evil:

 

[mik]

Yes It's not proper passive, but gyrator type topology based on inductor, I guest .I've
a pair of it, But a lost the schame somewere...surely my wife trash it thinking was junk, she never admit it.
Mik :roll:

 

[sismofyt]

Anyone..?

 

[[silent:arts]]

The W395 schematic is here:
www.silentarts.de/lab/studiotechnik/TAB/W395_Schematic.pdf

U374a is on the scanner ...

 

[sismofyt]

I LOOOOOOOOOOOOOOOOOOOOOOOOOOOVE YOU....!!!!

:grin: :green: :thumb: :grin:

 

[sismofyt]

I get a 404 error :?:

 

[[silent:arts]]

[quote author="sismofyt"]I get a 404 error :?:[/quote]
Corrected - but the U374a has to wait until the weekand

 

[sismofyt]

You put in the link for the W689 instead.. no hurry, I've been waiting years for those schematics :thumb:

 

[[silent:arts]]

now you have the right link:
www.silentarts.de/lab/studiotechnik/TAB/W395_Schematic.pdf

I have to go to sleep now ... :sad:

 

[sismofyt]

Great, great, great, great just great. Vielen Dank! :thumb:

Great, really great :grin:

Just great :thumb:

Great really :grin:

 

[sismofyt]

Looks different from the W295. There's some elaborate filtering going on in the PSU. Quadruple emitter followers :shock:

Great, just great!

 

[[silent:arts]]

I have the U374 here:
http://www.silentarts.de/lab/studiotechnik/TAB/U374_Schematic.pdf
couldn't find an "A" version ... :?

 

[sismofyt]

Thank you!

It does look a lot different from what I expected though :? Hmm..

 

[[silent:arts]]

Are you well-placed on an effervescent and never ending source of schems? :?:

That scares me! :wink:

I don't think never ending, but there's much more to come... The advantige of working for the oldest german radiostation. If I would start to scan the old Braunbuch it will take years!

are you looking for something special ?

 

[sismofyt]

I'm looking for any discrete TAB/Telefunken/Siemens stuff.. they have become a bit of a passion for me. If you check Kubi's site, you can see what we have so far...

www.kubarth.de/diy/german/index.html

Thank you so much for these schematics, I've had a helluva hard time finding them!

 

[sismofyt]

Do you have the W394 & W393 high and lowpass filters?

 

[[silent:arts]]

[quote author="sismofyt"]Do you have the W394 & W393 high and lowpass filters?[/quote]
I have the W395 here at home if you want it, for The W393 & W394 I have to look at work - will be monday.

I have V676 / V676a / V676b allready scanned (great Mic-Pres by the way, I have 4 "A"s and 8 "B"s - they sound great! :grin: :grin: :grin: )
... and I took them all out of the garbage ... :green: :green: :green:

 

[sismofyt]

You allready gave us the W395 :wink:

If you could scan the others, I'd be very happy!