Universal Audio UA 176 - Limiting Amplifier

[JBB]

Universal Audio UA 176 - Limiting Amplifier


Implemented another project:

Photos of the project: http://jbb.ru/176/

Layout UA 176: http://jbb.ru/schematics/176-layout.htm

Scheme UA 176: http://jbb.ru/schematics/176-shem.htm

Layout UA 175b: http://jbb.ru/schematics/175b-layout.htm

Scheme UA 175b: http://jbb.ru/schematics/175b-shem.htm

BOM UA 175b/176 http://jbb.ru/schematics/UA_175_176_BOM.xlsx


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[bernbrue]

REDD47 and now this beauty!! I´m speechless!!
regards
Bernd

 

[plumsolly]

Great build!

 

[ilfungo]

Great  Build JBB!!!
How is the sound?

 

[JBB]

Great  Build JBB!!!
How is the sound?

Thank you.

The sound is very close to the original 176

Here you can listen to audio samples of the two Compressor - 176 and 175B to the master mix.

https://translate.google.ru/translate?sl=ru&tl=en&js=y&prev=_t&hl=ru&ie=UTF-8&u=http%3A%2F%2Fforum.guitarplayer.ru%2Findex.php%3Ftopic%3D318503.msg7887650%23msg7887650&edit-text=&act=url

1.mp3 - without compressors

2.mp3 - processing compressors

 

[ilfungo]

Thanks JBB
can you send me a link without translation?
I can't listen the mp3...
Thanks

 

[JBB]

Thanks JBB
can you send me a link without translation?
I can't listen the mp3...
Thanks

1.mp3 - without compressors:
http://forum.guitarplayer.ru/index.php?action=dlattach;topic=318503.0;attach=1065233

2.mp3 - processing compressors:
http://forum.guitarplayer.ru/index.php?action=dlattach;topic=318503.0;attach=1065234

 

[ilfungo]

THANKS JBB!!!
2 info:
on layout : Un - Ch- Ua  where are connected?

I've one UTC A10 can work as input?
There is an alternative to Sowter as interstage?
THANKS!!!

 

[JBB]

Un  - filament voltage (5v)
Ua  - anode voltage (325v)
Ch  - shoke

UTC A10 this is what need.

There are many alternatives to the interstage transformers.

Hammond, Cinemag, Lundahl - it is also possible to use.

Specify the exact analogues transformers cannot.  Have not studied the issue in this direction.

 

[ilfungo]

Thanks!!!
5v? = 6.3v?
Thanks

 

[JBB]

For gz34 rectifier need use 5v: http://www.drtube.com/datasheets/gz34s-jj2003.pdf

 

[ilfungo]

Hi JBB
I've also an UTC 0-1
could be this a good input transformer?
Thanks

 

[JBB]

Hi

Transformer UTC O-1 can also be used.

Here to discuss the same issue: http://groupdiy.com/index.php?topic=17654.0

 

[muffy1975]

Nightmare, ( semi-joking )

now I'm gonna have to build this too. ( serious )

Thanks JBB, you are a very kind man to share this info so elegantly  ( actually )

regards

Michael

 

[JBB]

Thanks,

Good Luck in the build.

 

[ilfungo]

Hi
I'm building the 176!!!
I want to implement like Retro 176 the asymmetrical function and interstage trafo bypass,
Can someone help me?
THANKS!!!

 

[JBB]

Hi,

My congratulations!

Photos will be?

 

[ilfungo]

Hi JBB
I'm starting and I'm waiting the output transformer from sowter...
When the project is on the way I will post some images.
Asymmetry switches?
Interstage Bypass?
HP Filter?
THANKS!!!

 

[dandeurloo]

JBB, very nice work!  I love seeing it.

 

[JBB]

Asymmetry switches?
Interstage Bypass?
HP Filter?

I don't understand the questions.