weak joe compressor - diyAudio
Go Back   Home > Forums > Live Sound > Instruments and Amps
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Instruments and Amps Everything that makes music, Especially including instrument amps.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 27th April 2011, 08:31 AM   #1
diyAudio Member
Join Date: Apr 2010
Default weak joe compressor

Hi all,

i built a weak joe compressor and found the unit to be good i tried different combinations of Op amps and nsl 32 opto isolator as well as some home made opto isolator which i found actually worked better. but at maximum compression the compressor seems to distort a bit i figure the attenuation to earth is the culprit for the distortion i can't figure out what else may be causing it. I know that compressor can be a bit of pig in a basket but finding a good diy one to build is another story also any one with any nice schematics of opto compressor please let me know. But for now i have been trying different options to make this particular compressor to just kick that little bit nicer. i would like nice clean compression with a bit of kick when adjusted right but just haven't found a schematic that cuts it but if anyone has any ideas in regards to tweaking the weak joe please let me know. It has got me with the distortion problem this unit has that anyone uses it in any studio.
  Reply With Quote
Old 27th April 2011, 08:33 AM   #2
diyAudio Member
Join Date: Apr 2010
Default weak joe compressor

forgot to post the site link: Weak Joe Optical Compressor
  Reply With Quote
Old 4th May 2015, 08:35 PM   #3
rankot is offline rankot  Serbia
diyAudio Member
Join Date: May 2015
What do you have in mind with "attenuation"? I see only attack/release/threshold/ratio pots!
  Reply With Quote
Old 5th August 2015, 04:07 PM   #4
diyAudio Member
Join Date: Aug 2015
SeedSeed, you posted this a while back, but it's hard to find people who actually finished this project, so I would really appreciate a quick answer to a question I have:

From mnat's website, which components did you use, the ones given in the PCB layout, or the ones from the Schematic image? There are some differences, and I wonder which ones are the correct ones. On the site, mnat writes both "This printed circuit board has been verified as 100% functional." and the schematic link says "Basic Schematic showing modifications", so I am not sure.

I followed the PCB, got everything assembled, and am now debugging, since the trim-pot doesn't seem to have any effect on the voltage/resistance across the VTL5C9. I double checked pretty much everything and before I calculate every voltage division, I want to know whether this can actually work with the values of components I used.

Cheers, Chris
  Reply With Quote
Old 31st August 2016, 06:04 PM   #5
diyAudio Member
Join Date: Aug 2016
Location: London
Hi Chris,

Just about to start the weak joe, did you conclude whether it was the PCB or schematic that was correct? Did you have any luck with the VTL5C9?

Thanks, Will
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Hello from Joe Joe Alesi Introductions 2 7th May 2010 02:52 AM
Elsinore by Joe Rasmussen FrancoB Swap Meet 0 24th March 2009 11:23 AM
Hey guitar joe... mashaffer Instruments and Amps 0 19th July 2008 02:03 AM
Joe Zawinul passed away phase_accurate Music 0 12th September 2007 10:23 AM
Joe D'Appolito's THOR (Seas) wopo Multi-Way 97 3rd March 2006 05:25 PM

New To Site? Need Help?

All times are GMT. The time now is 05:02 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2