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CEM 3340 Thread or When will we get SCI Pro One in Eurorack?
MUFF WIGGLER Forum Index -> Eurorack Modules  
Author CEM 3340 Thread or When will we get SCI Pro One in Eurorack?
Adore
I just found out about the TH 555 VCO. Sounds epic.

So now I see the original SCI Pro One chip has been reissued.

Will someone make a Pro One VCO clone happen with the new chip? Take all the money?
scuto
I don't know about the Pro One, but according to NAMM videos 2hp will release its VCO module based on the 3340 later on this year.
coolshirtdotjpg
The Manther is supposed to be similar to the pro-one.
Adore
Oh shit, thanks guys. I will check out Manther.

This looks great too!

https://www.kickstarter.com/projects/moxon/miasma-classic-dual-voice-e urorack-synthesizer-mod
scdreger
Adore wrote:
I just found out about the TH 555 VCO. Sounds epic.

So now I see the original SCI Pro One chip has been reissued.

Will someone make a Pro One VCO clone happen with the new chip? Take all the money?


Thomas Henry recently did a oscillator based on the CEM 3340 ... VCO Maximus. I just finished building it this week. It's also very nice.

Build: https://instagram.com/p/BfBpykVjoIx/

Some sounds (but there's a lot more going, wasn't meant to be an osc demo): https://instagram.com/p/BfEZu25jZ8D/
Chopper
http://www.doepfer.de/A1113.htm
sinemod
Mindphaser from Hexinverter !
A complex vco based on the 3340.
Should give you your ProOne Oscillator and much more.
suthnear
There are 3340 oscillators for days these days:

Doepfer:
https://www.muffwiggler.com/forum/viewtopic.php?t=158384

Aemit:
https://www.muffwiggler.com/forum/viewtopic.php?t=190315

VSL:
https://www.muffwiggler.com/forum/viewtopic.php?t=195408

Mindphaser:
https://www.muffwiggler.com/forum/viewtopic.php?t=194739&postdays=0&po storder=asc&start=25

Nonlinear circuits:
http://nonlinearcircuits.blogspot.co.uk/2016/10/cem3340-vco.html

As far as the filter is concerned, the only non-DIY only 3320 equivalent I am aware of is by Erica Synths:
http://www.ericasynths.lv/en/shop/eurorack-modules/by-series/black-ser ies/black-multimode-vcf/
It's their clone of the 3320, though, so I don't know how it compares to the original
peripatitis
so what's special about the 3340 chip based oscillators?
suthnear
They were in a number of classic vintage synths: sh101, jupiter 6, pro one, prophet five, ob8, obxa, memorymoog, etc
sinemod
peripatitis wrote:
so what's special about the 3340 chip based oscillators?

They track verry well !!!!
auxren
This is an easy build and a great sounding VCO. I built 3.

https://modularaddict.com/manufacturer/timo-rozendal/timo-cem3340vco-p cbpanel
technicoloraudio
I believe the Miasma from Halcyon might be right up the Pro-1 alley.
ersatzplanet
Cloning the Pro-One's audio circuitry is pretty easy, there are not that many components added to the CEM chips. The sequencer and keyboard bit is another thing altogether requiring a programed CPU chip. Here are the schemes if you want a glance at them:





If you want better images:
https://www.dropbox.com/s/czsdcwm3xu12ezh/pro1-schematics-a.gif?dl=0
and
https://www.dropbox.com/s/8iwc7c6574xmaci/pro1-schematics-b.gif?dl=0
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