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Crumar DS-2 VCO vs DCO

Posted: Wed May 11, 2016 5:05 pm
by Daniel Byrne
Hi there. I was wondering if someone could solve this dispute once and for all. Preferably this would be from someone who understands electronics.

The Crumar DS-2 oscillators: are they purely analogue VCOs with just the keyboard's frequency signal being digital, or are they analogue oscillators under control of a digital clock (classic DCOs)?

Also, does anyone know what type of filter it has? I.e. transistor ladder, OTA etc.

Thanks in advance. :)

Dan.

Re: Crumar DS-2 VCO vs DCO

Posted: Wed May 11, 2016 8:45 pm
by madtheory
DCO v VCO is a false dichotomy. There are a lot of ways to make an oscillator. Sounds like the Crumar generates the waveform "analogue" but the pitch is digitally controlled.

Re: Crumar DS-2 VCO vs DCO

Posted: Wed May 11, 2016 8:59 pm
by adhmzaiusz
madtheory wrote:DCO v VCO is a false dichotomy. There are a lot of ways to make an oscillator. Sounds like the Crumar generates the waveform "analogue" but the pitch is digitally controlled.
The waveforms on the DS2 actually look very digital. Check out the sound doctorin youtube videos, he talks about about the stepping shaped waves
Image

The filters are 3080 OTA's

Either way, I picked one of these up about a month ago and whatever the h**l the oscillators are it doesn't really matter because the thing sounds beefy as h**l. Punchiest envelopes too.

Re: Crumar DS-2 VCO vs DCO

Posted: Thu May 12, 2016 12:13 am
by ApolloBoy
There are a few other synths that use stepped waveforms, like the SH-1000 (which uses a VCO) and the Poly-800 to name a few.

Re: Crumar DS-2 VCO vs DCO

Posted: Thu May 12, 2016 2:59 pm
by Daniel Byrne
Thanks for the replies everyone. Seems like there's just so many ways to make an oscillator. And yes indeed, the DS-2 is one of the fattest monosynths that I've heard demos of, which is why I thought to ask on here to ask about its design. :)

Re: Crumar DS-2 VCO vs DCO

Posted: Fri May 13, 2016 8:59 am
by colmon
DCO is like matsturbation, VOC is like sex with real womans!!11 :mrgreen:

Re: Crumar DS-2 VCO vs DCO

Posted: Fri May 13, 2016 9:48 am
by Bitexion
My Andromeda A6 has 32 VCOs stroking me, so I don't need a real womans

Re: Crumar DS-2 VCO vs DCO

Posted: Fri May 13, 2016 4:13 pm
by adhmzaiusz
Bitexion wrote:My Andromeda A6 has 32 VCOs stroking me, so I don't need a real womans
Like a khan of khans with a royal VCO harem ;)

Re: Crumar DS-2 VCO vs DCO

Posted: Fri May 13, 2016 5:51 pm
by Walter Ego
colmon wrote:DCO is like matsturbation, VOC is like sex with real womans!!11 :mrgreen:
Then what is an Operator like?

Re: Crumar DS-2 VCO vs DCO

Posted: Fri May 13, 2016 7:36 pm
by Bitexion
Operators are digital so I guess they're like watching p0rn on your pc

Re: Crumar DS-2 VCO vs DCO

Posted: Fri May 20, 2016 2:06 pm
by madtheory
Here's a good explanation of why a famous DCO synth is not "as digital" as one might assume:
https://synthnerd.wordpress.com/2015/10 ... 6-the-dco/

Re: Crumar DS-2 VCO vs DCO

Posted: Wed May 25, 2016 7:33 am
by thecolorgold
....something something.... "you're one smooth operator"

Sorry, I don't know why, but this tread made me think of playing the first gen PlayStation game "rage racer," and all of its techno-sound-design glory.

Re: Crumar DS-2 VCO vs DCO

Posted: Sun May 29, 2016 5:29 pm
by ApolloBoy
colmon wrote:DCO is like matsturbation, VOC is like sex with real womans!!11 :mrgreen:
Uhhh don't you have a JX-8P which uses DCOs?

Re: Crumar DS-2 VCO vs DCO

Posted: Sun May 29, 2016 7:42 pm
by Swayze
ApolloBoy wrote:
colmon wrote:DCO is like matsturbation, VOC is like sex with real womans!!11 :mrgreen:
Uhhh don't you have a JX-8P which uses DCOs?
Sex with real womans is good, but he still like to play with his JX-PP :)