My next challenge - a Poly Oakley

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magman
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Post by magman » Mon Sep 03, 2018 2:51 pm

Things have been ticking over quite nicely recently.

I had a few parts deliveries in the last week, including most of the almost 200 pots I will need for this project.
Image

This is a photo from last Thursday, with quite a few PCB’s mostly populated, apart from a few parts that are on order.

Image

That’s 2 normal VCO’s, 1 S-VCO with 4 octave boards and 3 VCO Controllers mostly built. Since then I have completed 3 SVCF’s, 2 FourMix’s and I’m will on with 2 Diode Ladder filters.

I have also ordered and received 3 active mults from dslman, which is one thing I overlooked in the original design.

Last but no means least, I decided to add some MultiMix’s to the design, so that I can mix the filter outputs before patching them to the ADSR VCA input. I have 2 of these in my existing modular, so will be adding two more from Mr Allgood.

Off to warm up the soldering iron again.

Regards

Magman
Next Liverpool Synth Meet - it’s 11th April 2020

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jean_schön
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Re: My next challenge - a Poly Oakley

Post by jean_schön » Wed Feb 12, 2020 5:54 am

Hey, any update on this project?

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Re: My next challenge - a Poly Oakley

Post by oozitron » Sun Feb 23, 2020 8:43 am

I am just finishing my Poly Oakley - actually I call it the Oakleyheim Four Voice.

Four ASVs and a Yarns. It is sounding awesome. My dream (since high school in 1980) of having a 4VS is coming to fruition :-)

Drew
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Re: My next challenge - a Poly Oakley

Post by snevlida14 » Mon Feb 24, 2020 8:02 pm

:sb: :yay:

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Re: My next challenge - a Poly Oakley

Post by Flareless » Mon Feb 24, 2020 8:56 pm

oozitron wrote:
Sun Feb 23, 2020 8:43 am
I am just finishing my Poly Oakley - actually I call it the Oakleyheim Four Voice.

Four ASVs and a Yarns. It is sounding awesome. My dream (since high school in 1980) of having a 4VS is coming to fruition :-)

Drew
Nice! :yay:

Got pics?
Rich

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Re: My next challenge - a Poly Oakley

Post by oozitron » Wed Feb 26, 2020 3:49 pm

One voice:
asv.jpg
The whole deal:
oakleyheim.jpg
It sounds fooking incredible... I get lost for hours playing with it

Drew
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Re: My next challenge - a Poly Oakley

Post by Dr Gris » Wed Feb 26, 2020 4:44 pm

Fantastic!!
Would love to hear it. I really enjoy my single Oakley ASV. It's a bit polite sounding but great nevertheless.

//M

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Re: My next challenge - a Poly Oakley

Post by oozitron » Sun Mar 01, 2020 1:09 pm

Made a few demos. Recorded live (no overdubs but I chopped out all the time I took changing all the knobs!) with a bit of echo, but no other effects at all. (the filter can certainly create the impression that there's a phaser or flanger involved).

Voices are panned. Headphones recommended!

This one only uses VCO1 (no VCO2 or sub) and lets you hear what the filter does:
https://soundcloud.com/oozitron/oakelyh ... ice-demo-1

Both VCOs going on this one. A little "Weather Report"-ish/BoC with some Rush at the end :-)
https://soundcloud.com/oozitron/oakleyh ... ice-demo-2

Some more... (with lots of VCO sync turned on)
https://soundcloud.com/oozitron/oakleyh ... ice-demo-3

Drew
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Re: My next challenge - a Poly Oakley

Post by Dr Gris » Thu Mar 05, 2020 12:56 am

Superb!!!! :hail:
Darn... now I need three more...

//M

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Re: My next challenge - a Poly Oakley

Post by Sir Ruff » Thu Mar 05, 2020 7:35 pm

oozitron wrote:
Wed Feb 26, 2020 3:49 pm
One voice:
asv.jpg

The whole deal:
oakleyheim.jpg

It sounds fooking incredible... I get lost for hours playing with it

Drew
I definitely prefer those knobs to the ones that Oakley has, and I also like how you color-coded envelope one functions. What is the name of that type of knob again?

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Re: My next challenge - a Poly Oakley

Post by oozitron » Thu Mar 05, 2020 10:17 pm

They are Davies 1900 clones. Modular Addict, SynthCube and Small Bear have them.

I used Dark Grey for the LFO Freq and the 3 LFO mod amounts
I used Light Grey for the ADSR #1 pots and the 3 ADSR #1 mod amounts
The rest are Black, except for the VCO2 fine tune and the VCF Freq. Those were for a 1/8" shaft and I had to dis-assemble them, drill them out and then put them back together. Several got damaged in that process, but it was worth it because they look so Oberheim-ey.

The different color / size knobs make it much easier to quickly program; 112 of the exact same knobs was tricky to deal with!

If you have black panels, I wouldn't suggest black knobs. I went with white panels for the Oberheim feel :-)
asv.jpg
Drew
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Re: My next challenge - a Poly Oakley

Post by Sir Ruff » Mon Mar 09, 2020 12:03 pm

oozitron wrote:
Thu Mar 05, 2020 10:17 pm
They are Davies 1900 clones. Modular Addict, SynthCube and Small Bear have them.
thanks... exploring this and other knob options. I actually like the classic moog style knobs on the top half of Tony's panel on his site; I just don't like those straight knobs used for envelopes. I suspect he chose those to avoid cramping, which I definitely appreciate (and care more about than style). But if there is something similarly narrow that would look better, I'd go for it. I don't think Davies + Moog style would look that great, but maybe?

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Re: My next challenge - a Poly Oakley

Post by nuromantix » Tue Mar 17, 2020 6:04 pm

Amazing

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magman
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Re: My next challenge - a Poly Oakley

Post by magman » Wed Mar 18, 2020 1:16 pm

Sorry I took so long to send an update, I only just figured out how to attach images in the new forum software.

Virtually all of the modules are complete, though I do also have to debug a few of them still.

I have temporarily installed the Poly modules in my “portable rig”, this photo is from the Birmingham synth meet a few weeks ago. I do plan to remount these in another case, as each voice works out at 12U. I also want at least 2U of modules in front of the voices to add some additional modules, such as MIDI to CV and some active mults.

I use 2 MIDI-CV modules, one from Hexinverter, for the Poly CV and Gate, as well as an Oakley midiDAC, as this gives controls for pitch bend and aftertouch, amongst others.
AA89FC44-6834-4729-87F5-404AD6DAF85F.jpeg
In this photo, the three cases on the left are 3 “Voices”, the three on the right are 1 more voice, ancillaries - including MIDI in the second case and the second set of filters and a couple of mixers in the third case.

I had most of this finished for Synth DIY at Cambridge last year, including the Front Panels, but other projects have distracted me since then.

I plan to go through the whole system again in the coming weeks, debugging and tweaking, then build them into a more useful home.

Regards

Magman
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Re: My next challenge - a Poly Oakley

Post by oozitron » Thu Mar 26, 2020 9:07 am

A little demo of my Oakleyheim Four Voice:



Drew
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Re: My next challenge - a Poly Oakley

Post by wiperactive » Thu Mar 26, 2020 10:46 am

Fantastic work. If I hadn't already splashed out on a DSI OB-6 desktop (not the same in certain key respects, I know) I would seriously consider this as a project on the strength of this.

Your commentary/instrument sound balance on this vid could be better though.

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