Simple DiodeBridge Compressor

[richiyobs]

Hi Xmission
Basically the schem is that...
I left the project opened cause still in progress...
I wrote all the updates....
Hope to finish soon and upload what can be called a final version
Best
Richi

 

[richiyobs]

maybe adding something like this in front of your threshold...

View attachment 89099

HI Dogears... Thank you so much for your suggestion... Simulated and It works great...
At Cv I got a better response and as you said... More room for Thr
Best
Richi

 

[richiyobs]

This is a blend control, i m running it on a mono RM57 limiter, and works fine....didn t noticed problems
I will add thinking about a stereo version with stepped pot for blending, since understand that it s very difficult having matched dual pot
Any suggestions to improve the idea?
Thanks for your attention
Best

 

[richiyobs]

this is the comparison with the add of the extra buffer by Dogears
1u for timing cap
fast att, slow rel - max Thr and Ratio

 

[richiyobs]

sorry for the wavefroms, different signals, the upper one was double the freq...

 

[richiyobs]

https://we.tl/t-ek734vnGq8this is a test....
still have to add to extra buffer at SC and the amp out
sorry for poor quality phone audio
cheers

 

[richiyobs]

balanced out... looks goot at simulation
any suggestions please?

 

[abbey road d enfer]

balanced out... looks goot at simulation
any suggestions please?

Too complicated for something that will collapse as soon as you ground one of the legs.
I can do as bad with only two opamps.

 

[richiyobs]

Is there a useful configuration with standard opamp?
Searched into forum but couldn t find

 

[abbey road d enfer]

Google "OpAmps in Line-Driver and Receiver Circuits" by Walter Jung, then this
https://www.ranecommercial.com/kb_article.php?article=2112See in the attachment how Soundcraft did it for about 20 years.
Today, almost everybody uses dedicated chips from THAT, SSM or TI.

 

[richiyobs]

Google "OpAmps in Line-Driver and Receiver Circuits" by Walter Jung, then this
https://www.ranecommercial.com/kb_article.php?article=2112See in the attachment how Soundcraft did it for about 20 years.
Today, almost everybody uses dedicated chips from THAT, SSM or TI.

Thanks for the info....
The attached one is the quasi floating from small signal audio design
I know modern ic are better and easy to plug.... But still have few ne5532 and tl072 to use....
Best
Richi

 

[richiyobs]

I read Rane knowledge base... Very interesting... Finally I m starting to understand cross coupled config...
Thanks for you support!
Best
Richi

 

[richiyobs]

another balanced out attempt
now i get less offset in the upper range
and with R8 obtained less ripple for 1k harmonics
that s the maximum i can verify!
thanks for you attention
cheers

 

[abbey road d enfer]

Do you really want that? You can't connect that to an unbalanced input.

 

[richiyobs]

what am I doing wrong?
Feel confused... Saw an example like that for balanced transmitter

 

[richiyobs]

sorry for troublings, but I can only learn by doing it wrong

 

[Heikki]

Do you really want that? You can't connect that to an unbalanced input.

How often do we encounter gear with unbalanced inputs? Even the cheapest home recording equipment nowadays has balanced inputs. As far as I know pro audio equipment has always had balanced inputs. Only gear with unbalanced inputs I have used have been tape recorders for home/semi pro use.

 

[richiyobs]

I m running unbalanced send and return on a 80s console in my pseudo lab.. Which problem I could get?
Overloading the return?
Or shorting the cold to ground can cancel the signal?

 

[Heikki]

I m running unbalanced send and return on a 80s console in my pseudo lab.. Which problem I could get?
Overloading the return?
Or shorting the cold to ground can cancel the signal?

Distortion if one of the output pins is grounded and no problem at all if left floating.

 

[richiyobs]

Ok... Thanks for you quick reply