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WIGGLING 'LITE' IN GUEST MODE

TWO59 COMPLEX VCO (by FEEDBACK)
MUFF WIGGLER Forum Index -> Music Tech DIY Goto page 1, 2, 3, 4  Next [all]
Author TWO59 COMPLEX VCO (by FEEDBACK)
strat-1
UPDATE : The FEEDBACK Store is online now :
www.feedbackmodules.com



PLEASE USE THIS THREAD FOR QUESTIONS RELATING THE PROJECT AND THE KITS, USE THE DEDICATED THREADS FOR TROUBLESHOOTING AND TECHNICAL QUESTIONS. THANK YOU.

TWO59 is a complex oscillator consisting of 3 modules : two identical triangle core vco's (one main vco and one for modulation) and a shaper module.
You have the option to use the VCO independently or two VCOs in conjunction with the shaper module as a complex oscillator.

Because of the triangle core, the VCO's work very well for FM modulation.

TWO59 is not a clone of the original 259, but an enhanced adaptation of the classic circuit to eurorack format with many additional features.
Also our goal was to replace most obsolete parts with current products where possible, to make parts sourcing less problematic. Of course there are a few places where the original parts were essential for correct functionality.


Some of the features:
-standalone eurorack modules, so if you want you can only build and use the VCO
-4 independent buffered outputs that can be used simultaneously with the shaper module
-more stable core using THAT340 matched pairs transistors which provides a higher correct octave range than the original circuit
-more trimming options added in the shaper section to make tuning easier


This is a highly complex project, it is not recommended to beginners. You need some skills and experience with previously built projects.
Also this project involves many expensive parts. Before deciding to build it we recommend to consult the BOM list and the build docs to have a better idea about the complexity of the project.
An oscilloscope, a multimeter and a frequency meter are essential to make the building and calibration process easy. Calibrating by ear is not an option if you want the complex oscillator to work correctly.

We tried to make the documentation as detailed as possible and we added a comprehensive calibration section.

Even if you are an experienced builder with good electronics knowledge we recommend to take a look at the
manual in the process of building, it contains details that can ease your build.

The project is divided in three threads:

- This thread for details about availability and ordering. The main post of the project.
- the VCO thread including the building docs.
https://www.muffwiggler.com/forum/viewtopic.php?t=169991
- the SHAPER thread including the building docs.
https://www.muffwiggler.com/forum/viewtopic.php?t=169992


As previous FEEDBACK projects, I will not sell the pcbs without front panels.

FOR ORDERING PLEASE SPECIFY THE QUANTITY OF EACH TYPE OF MODULE (EX. IF YOU WANT A FULL UNIT :2XVCO KIT?, 1XSHAPER KIT?)
THE VCO CAN BE BOUGHT SEPARATELY AND THIS WILL CREATE CONFUSION IF YOU DON'T SPECIFY THE TYPE OF MODULE YOU WANT.

VCO KIT1: 2PCBs + Front Panel 25EUR (20pcs.)
VCO KIT2: 2PCBs + Front Panel 35EUR (20pcs.)
+ 2XPN3565 (matched)
+ 2N5457 preselected for correct sine shape (limited stock)
+ 2 resistors preselected for correct sine shape
VCO KIT3: 2PCBs + Front Panel 55EUR (10pcs.)
+ 2XPN3565 (matched)
+ 2N5457 preselected for correct sine shape (limited stock)
+ 2 resistors preselected for correct sine shape
+ 8Xjack sockets, 5X9mm pots (10KB, 20KB, 50KA), 4X Cream Knobs 1900h type, 1X big cream Knob 1510 type
+ 1x14 way header MALE, 1x14 way header FEMALE

KIT1 :



KIT2 :



KIT3 :



SHAPER KIT1: 3PCBs + Front Panel 35EUR (10pcs.)
SHAPER KIT2: 3PCBs + Front Panel 55EUR (10pcs.)
+ 2XPN3565 (matched)
+ 2XLF13331 (tested)
+ 1X2N3958 dual fet (tested)
+ 1X79L06 (hard to get in some places)
SHAPER KIT3: 3PCBs + Front Panel 80EUR (5pcs.)
+ 2XPN3565 (matched)
+ 2XLF13331 (tested)
+ 1X2N3958 dual fet (tested)
+ 1X79L06 (hard to get in some places)
+ 6Xjack sockets, 6X10KB 9mm pots, 4X Cream Knobs 1900h type, 2X big cream Knob 1510 type
+ 2x2 way header MALE, 2x2 way header FEMALE
+ 1x8 way header MALE, 1x8 way header FEMALE
+ 2X10 way header MALE, 2x10 way header FEMALE
+ 1x20way2row Header MALE, 1x20way2row Header FEMALE

KIT1 :



KIT2 :



KIT3 :



You can find all the kits and full modules to : www.feedbackmodules.com


Audio demos :

The sound clicks are from computer latency, not from the modules smile
Somehow I forgot to record the ramp wave. I will record it soon.

[s]https://soundcloud.com/strat1/two59-square[/s]
[s]https://soundcloud.com/strat1/two59-triangle[/s]
 [s]https://soundcloud.com/strat1/two59-sine[/s]
[s]https://soundcloud.com/strat1/two59-shaper-basics[/s]
 [s]https://soundcloud.com/strat1/two59-shaper-modulations[/s]
[s]https://soundcloud.com/strat1/two59-two59s-on-the-bread[/s]

This demo uses 2 Full modules and one additional VCO (5VCO's in total). For this I didn't used extreme modulations, it's a demo to demonstrate how good is the tracking of VCOs on notes.
It was recorded real time.
-The starting bass line panned to the left speaker is a triangle wave passing to a jupiter8 filter module, to know how will sound affected by a VCF.
-The second line panned more to the right is the ouput of one shaper directly to a VCA. I turn the timbre slowly in various points of the song.
-For the other two lines I used some spring reverb.
-The ending is with pitch (fm) modulation ON.
-All the VCO's stayed in tune for a period of 3 hours until I closed the system.





Other Feeback projects you can build :

CP3+ Mixer :
https://www.muffwiggler.com/forum/viewtopic.php?t=158439
SmArTT verter :
https://www.muffwiggler.com/forum/viewtopic.php?t=158691
106 Chorus :
https://www.muffwiggler.com/forum/viewtopic.php?t=158257
PRE CR :
https://www.muffwiggler.com/forum/viewtopic.php?t=163228
PRE BX :
https://www.muffwiggler.com/forum/viewtopic.php?t=163224
PRE KM :
https://www.muffwiggler.com/forum/viewtopic.php?t=163227
106 Chorus :
https://www.muffwiggler.com/forum/viewtopic.php?t=166892
GryphonP3
Oh heeeeeell yeah!!! Been waiting on this forever!!

Will take a Kit2 please!
gwaidan
Looks great!
mush
Kit 3 please.
Isaiah
These look ace! Well done!

What sort of range are the CV inputs expecting? 0~5V? 0~10V? +/-5V?
What are the output levels of the VCOs, still Buchla level or amplified?
strat-1
Isaiah wrote:
These look ace! Well done!

What sort of range are the CV inputs expecting? 0~5V? 0~10V? +/-5V?
What are the output levels of the VCOs, still Buchla level or amplified?


0-10V cv signals with pots to minimum (SYMMETRY, ORDER) only positive voltage.
Attenuverted inputs accept negative voltage input.
Outputs are 4Vpp.
strat-1
FOR ORDERING PLEASE SPECIFY THE QUANTITY OF EACH TYPE OF MODULE (EX. IF YOU WANT A FULL UNIT : 2XVCO KIT?, 1XSHAPER KIT?)
THE VCO CAN BE BOUGHT SEPARATELY AND THIS WILL CREATE CONFUSION IF YOU DON'T SPECIFY THE TYPE OF MODULE YOU WANT.
Jarno
Fantastic work, and I still think that build doc with that background is tres cool, the only thing missing is the crease in the middle for the wider pages grin
It is tempting to buy the full thing, but I still have two spare 258j boards I'd like to use so for me:

I'd like 1x Shaper KIT2 (the KIT2 without the headers, just the hard to get silicon).


By the way, there's a typo in the ordering for the SHAPER, the kit with the headers is KIT3 I presume, and right now it says KIT2.
acilator
interested in;
VCO Kit2 2x
Shaper Kit2 1x
djamsia
HELLO

interested in;
2x VCO Kit2
1x Shaper Kit2

THANKS!!!
synthetek
Interested in

2x VCO Kit 2
1x Shaper Kit 2

Thanks Rockin' Banana!
strat-1
Jarno wrote:
Fantastic work, and I still think that build doc with that background is tres cool, the only thing missing is the crease in the middle for the wider pages grin
It is tempting to buy the full thing, but I still have two spare 258j boards I'd like to use so for me:

I'd like 1x Shaper KIT2 (the KIT2 without the headers, just the hard to get silicon).


By the way, there's a typo in the ordering for the SHAPER, the kit with the headers is KIT3 I presume, and right now it says KIT2.


I corrected the mistake. Thank you,

You have to connect 258 VCOs at the back of the module with connectors - 4Vpp exact signals (you need to scale them if they are not right).
astroschnautzer
interested in:
2x vco kit2
1x shaper kit2
negate
Hi.

This is all great, but where to get the VTL5C3/2 Vactrols?

Cheers.
fuzzbass
106 Chorus was a smash! I would take:
4x VCO Kit3
2x Shaper Kit3

Thanks,
strat-1
negate wrote:
Hi.

This is all great, but where to get the VTL5C3/2 Vactrols?

Cheers.


It's all noted in the BOM list.
You can buy Xvive versions from Thonk (tested in the project).
Or you can find Perkin Elmer old ones on ebay.
audiohawk
The Chewbacca Defense
2xVCO Kit2
1xSHAPER Kit2

Thank you!
nurbivore
awww yiss

2x VCO Kit 2
1x Shaper Kit 2
paterursus
Hi,
Interested in
2x VCO kit 2
1x shaper kit 2

Thanks much for this!
sduck
I like it! I want 2 VCO kit 2. and 1 shaper kit 2.
Willzyx
Looks very cool, I am in for
1x Shaper Kit 2
strat-1
Unfortunately all the SHAPER kits are out of stock.
I still have 12 VCO boards in stock for those who want to build just the VCO or want to build the VCOs in advance.
sduck
Then put me on the waiting list for when you get more!
sanders
Yeah, I'd like to be on the list for a Shaper kit 2
spneca
Could you put me on the list for 2x VCO kit 3 and 1x Shaper kit 3, please?
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