Author |
Message |
sneakthief
Joined: Jul 24, 2006 Posts: 569 Location: Berlin
|
Posted: Sat Jan 22, 2011 3:56 am Post subject:
|
|
|
re. rebote: stick a vactrol between the 50k delay time pot and the 1k resistor that goes to pin 6 of the ic. do the same between the repetition pot and the 33k resistor and bob's your uncle.
this will expedite the process:
http://bridechamber.com/VC_Res_PCB.html _________________ Sneak-Thief - raw electrofunk |
|
Back to top
|
|
|
Sebo
Joined: Apr 27, 2007 Posts: 564 Location: Argentina
|
Posted: Sat Jan 22, 2011 6:12 am Post subject:
|
|
|
Yes, that will be easy. I was thinking using transistor like the circuit posted in this thread. _________________ Sebo
---------------------------------------
My Music:
https://www.facebook.com/cosaquitos/ |
|
Back to top
|
|
|
brother303
Joined: Nov 02, 2010 Posts: 139 Location: ruhr-area/germany
|
Posted: Sun Jan 23, 2011 11:29 am Post subject:
|
|
|
Hi guys,
thanks for reply.
The vactrol-idea sounds good! I think I´ll give it a try.
What type of vactrols should be used? Same as on Thomas White 292 lowpass-gate?
Cheers
Greg |
|
Back to top
|
|
|
sneakthief
Joined: Jul 24, 2006 Posts: 569 Location: Berlin
|
|
Back to top
|
|
|
brother303
Joined: Nov 02, 2010 Posts: 139 Location: ruhr-area/germany
|
Posted: Sun Jan 23, 2011 2:28 pm Post subject:
|
|
|
Hi,
sneakthief wrote: | I suggest something fast like a vtl5c3/2. |
That´s what I had in mind,thanks.
Btw. : The Bridechamber link is great!
Best regards
Greg |
|
Back to top
|
|
|
inlifeindeath
Joined: Apr 02, 2010 Posts: 316 Location: Albuquerque, NM
|
Posted: Sun Jul 31, 2011 2:14 pm Post subject:
|
|
|
Just got done perf boarding this circuit from Scott's original schem. Used a vtl5c1 and it works great! Thanks for the circuit Scott! _________________ http://www.youtube.com/user/borisandfef |
|
Back to top
|
|
|
inlifeindeath
Joined: Apr 02, 2010 Posts: 316 Location: Albuquerque, NM
|
|
Back to top
|
|
|
himijendrix
Joined: Apr 16, 2012 Posts: 18 Location: Germany
|
Posted: Mon Apr 16, 2012 5:12 am Post subject:
Feedback Problem |
|
|
Hello there,
I built the Delay by using 221’s Layout. But the problem is, that there won’t be any Feedback, and the Delay time is very limited.
All I get is a single, short repeat.
Sound Sample:
http://dl.dropbox.com/u/37021051/delay%20sample.mp3
I checked every Resistor, found one where i soldered a 27k instead of 2.7k and fixed that.
The Wiring should be okay, too.
I replaced the Free Resistor by a 10k Trimmer and can slightly change the length of the Delay. The 100k Trimmer is used for setting the CV input, right?
If I connect the Mix Pot like it used to be in the old Layout I get some kind of Lo-Fi Feedback, which won’t stop. But the Feedback Poti still has no effect!
Any Ideas what’s wrong? As far as I understood several people where able to build it from 221’s Layout, So there shouldn’t be any Faults in the Schematic / Layout!?
And does any one here has the Old Layout/Schematic from Scott Bernardi? Because his website went offline, and i can't find it anywhere.
Hope for fixing this soon (It's part of a Yusynth Modular, and only two Modules are missing...)!
Thanks,
JE |
|
Back to top
|
|
|
Sebo
Joined: Apr 27, 2007 Posts: 564 Location: Argentina
|
Posted: Mon Apr 16, 2012 9:01 am Post subject:
|
|
|
Hi:
Check that the BC560 is OK at the right top of the PCB (and notice that isn't a BC550 like the other one).
Also check that the LM3080 is OK (if you have another one swap it). _________________ Sebo
---------------------------------------
My Music:
https://www.facebook.com/cosaquitos/ |
|
Back to top
|
|
|
Dave Kendall
Joined: May 26, 2007 Posts: 421 Location: England
Audio files: 3
|
|
Back to top
|
|
|
Sebo
Joined: Apr 27, 2007 Posts: 564 Location: Argentina
|
Posted: Tue Apr 17, 2012 7:00 am Post subject:
|
|
|
Just note that the schematic posted before uses a vactrol and isn't the one that matches the PCB posted at the begining of the thread.
If you look at middle of page 2 of this thread you will find the corresponding schematic posted by 211. _________________ Sebo
---------------------------------------
My Music:
https://www.facebook.com/cosaquitos/ |
|
Back to top
|
|
|
Dave Kendall
Joined: May 26, 2007 Posts: 421 Location: England
Audio files: 3
|
Posted: Tue Apr 17, 2012 9:51 am Post subject:
|
|
|
Thanks for the clarification Sebo.
cheers,
Dave
(in archival mode today ) _________________ "Everything in moderation, including moderation" |
|
Back to top
|
|
|
Paradigm X
Joined: Feb 15, 2011 Posts: 363 Location: Null and void
Audio files: 2
|
Posted: Wed Apr 18, 2012 6:42 am Post subject:
|
|
|
Intersting thread. cant etch myself but good to read. Last edited by Paradigm X on Thu Apr 26, 2012 1:58 pm; edited 1 time in total |
|
Back to top
|
|
|
himijendrix
Joined: Apr 16, 2012 Posts: 18 Location: Germany
|
Posted: Thu Apr 26, 2012 10:00 am Post subject:
|
|
|
Okay this week I spend some time with testing again, but i didn't find any faults. The BC560C is alright. Maybe the CA3080E is broken, but since it's very expensive i don't think that I'm going to buy another one.
It sounds like only the High Frequencies are affected by the Feedback!
This is the last module of a modular synth and maybe i just put a 1U Digital Delay inside and use the spare 1U for something else ... But before this i'll do a final testing session.
Greetings,
JE |
|
Back to top
|
|
|
Sebo
Joined: Apr 27, 2007 Posts: 564 Location: Argentina
|
Posted: Thu Apr 26, 2012 11:49 am Post subject:
|
|
|
Try bypassing the VCA portion of the feedback path. Just use a pot to control the feedback directly (no CV). Just to see if the 3080 is the problem.
To do it get the signal at the Delayed Output, wire it to one extreme lug of a pot (50K - 100K), wire the other extreme lug to ground, and wire the middle lug to the second audio input of the filter.
If feedback works OK, you have to check everything in the feedback path again. _________________ Sebo
---------------------------------------
My Music:
https://www.facebook.com/cosaquitos/ |
|
Back to top
|
|
|
Paradigm X
Joined: Feb 15, 2011 Posts: 363 Location: Null and void
Audio files: 2
|
Posted: Thu Apr 26, 2012 11:54 am Post subject:
|
|
|
nvm sorry Last edited by Paradigm X on Thu Apr 26, 2012 1:54 pm; edited 1 time in total |
|
Back to top
|
|
|
Sebo
Joined: Apr 27, 2007 Posts: 564 Location: Argentina
|
Posted: Thu Apr 26, 2012 1:48 pm Post subject:
|
|
|
I really don't know what you mean. The schematic at that site isn't simpler, just incomplete, as it lacks feedback, input adder, mix control, etc.
I think is an unfinished idea. It should work, but not a really useful circuit without the before mentioned parts (at least the feedback one).
Also the circuit posted in this thread didn't use a vactrol either. _________________ Sebo
---------------------------------------
My Music:
https://www.facebook.com/cosaquitos/ |
|
Back to top
|
|
|
Paradigm X
Joined: Feb 15, 2011 Posts: 363 Location: Null and void
Audio files: 2
|
Posted: Thu Apr 26, 2012 1:57 pm Post subject:
|
|
|
im sorry i got really confused |
|
Back to top
|
|
|
himijendrix
Joined: Apr 16, 2012 Posts: 18 Location: Germany
|
Posted: Thu Apr 26, 2012 2:23 pm Post subject:
|
|
|
Thank you Sebo!
I think I will have time to try this and to read through the schematic again next week. Than I will report about the Progress. |
|
Back to top
|
|
|
Sebo
Joined: Apr 27, 2007 Posts: 564 Location: Argentina
|
Posted: Thu Apr 26, 2012 4:31 pm Post subject:
|
|
|
Paradigm X:
It's OK, you don't need to delete the link, is a useful schematic to have as a reference.
JE:
Your welcome. Hope you find the problem. _________________ Sebo
---------------------------------------
My Music:
https://www.facebook.com/cosaquitos/ |
|
Back to top
|
|
|
befacosynth
Joined: Jul 20, 2010 Posts: 23 Location: Barcelona
|
Posted: Tue Oct 01, 2013 8:33 am Post subject:
|
|
|
Hi everyone!
We have done a new layout for this design. It's in eurorack flavor and has a couple of changes from Bernardi's original design:
- Time range selector: you can get you delay into crackling-noisy-garbage area. Getting a few seconds delay plus digital crap galore!
- CV control for the mix.
In our site you can find schematic, pannel design, instructions and CAD files in case you want to give this a try. (sorry, only spanish FTM. will translate soon)
http://www.befaco.org/es/sinte-modular/crush-delay/
If you live close to Barcelona, Madrid or Berlin you can join one of our workshops and do it yourself!
Thanks a million to Mr. Bernardi for the first design and 211 for opening this thread! _________________ BEFACO:
DIY MODULAR WORKSHOPS
www.befaco.org
befacosynth((at))gmail.com |
|
Back to top
|
|
|
LFLab
Joined: Dec 17, 2009 Posts: 497 Location: Rosmalen, Netherlands
|
Posted: Wed Oct 02, 2013 4:34 am Post subject:
|
|
|
Nice!
Did etch a board for the bernardi delay, but this seems a bit more euro friendly, thanks! |
|
Back to top
|
|
|
roglok
Joined: Aug 28, 2010 Posts: 202 Location: uptown
|
Posted: Wed Oct 09, 2013 4:47 am Post subject:
|
|
|
befacosynth wrote: | Hi everyone!
We have done a new layout for this design. It's in eurorack flavor and has a couple of changes from Bernardi's original design:
- Time range selector: you can get you delay into crackling-noisy-garbage area. Getting a few seconds delay plus digital crap galore!
- CV control for the mix.
In our site you can find schematic, pannel design, instructions and CAD files in case you want to give this a try. (sorry, only spanish FTM. will translate soon)
http://www.befaco.org/es/sinte-modular/crush-delay/
If you live close to Barcelona, Madrid or Berlin you can join one of our workshops and do it yourself!
Thanks a million to Mr. Bernardi for the first design and 211 for opening this thread! |
very nice! are you (or anyone else) planning to do a small run? i would surely be in for a couple of PCBs! |
|
Back to top
|
|
|
befacosynth
Joined: Jul 20, 2010 Posts: 23 Location: Barcelona
|
Posted: Thu Oct 17, 2013 2:17 pm Post subject:
|
|
|
roglok wrote: |
very nice! are you (or anyone else) planning to do a small run? i would surely be in for a couple of PCBs! |
In a couple of weeks we'll have a small run of kits. There are two PCBs, one for components and one for control (minijacks & vertical pots) and all needed parts.
For this first run we only will make the whole kit available for 80€ + shipping, not just PCBs. Sorry.
If you are interested in a kit drop us a mail to befacosynth@gmail.com
After this small run that is on the way we are planning a bigger order, and we might sell just PCBs. Maybe around christmas.
Thanks for the interest _________________ BEFACO:
DIY MODULAR WORKSHOPS
www.befaco.org
befacosynth((at))gmail.com |
|
Back to top
|
|
|
LektroiD
Joined: Aug 23, 2008 Posts: 1018 Location: Scottish Borders
Audio files: 2
G2 patch files: 2
|
Posted: Wed Dec 18, 2013 10:56 am Post subject:
|
|
|
creatorlars wrote: | Quote: | From the PCB? Where did you get that? |
It was self-etched from the PCB layout in this thread. |
I would like to build this too. Could someone direct me to the post in which the PCB layout is in, I can't find it... I can only see one with components already overlayed, I don't have any graphic editing software to delete the components. _________________ LektroiD |
|
Back to top
|
|
|
|