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Re: Korg MS-20 Mini

Posted: Wed May 08, 2013 6:09 pm
by Bitexion
Yeah, it's just so bloody confusing when you look at it.

Re: Korg MS-20 Mini

Posted: Thu May 09, 2013 9:29 am
by mute
While we're waiting... someone mind going into the MS-20's CV in detail for us less cv experienced?

Going with some recent contemporaries for example... like the Minibrute or Dark Energy. What would it take to connect these things up correctly? I understand they use different CV specs..

Re: Korg MS-20 Mini

Posted: Thu May 09, 2013 2:06 pm
by Hybrid88
It's just a different scaling method essentially.

Which is why the modular in that vid is out of tune when played by the MS.

Just needs a converter, think Korg make one for the MS originally MS-02 it was - mabe a reissue is in order?

Image

Re: Korg MS-20 Mini

Posted: Thu May 09, 2013 2:41 pm
by Bitexion
The main difference is that Korg uses a system that defines a certain amount of hertz between each note, 12 notes is an exact octave. Which kind of makes sense, since notes are specific hertz values anyway. A3=440Hz, A4=880Hz and so on.

The others use Volts/octave, specifying a certain voltage gap between each key, 12 keys is one octave, which doubles or halves the voltage from the previous octave, and the other keys are divided between those 12.
C1=1V, C2=2V, E1=1,3V, E2=2,6V etc etc

Most modular systems use 1V/Octave. When you plug a Hz/oct synth into an oscillator that is 1v/oct, they get totally different pitches.

Re: Korg MS-20 Mini

Posted: Thu May 09, 2013 4:04 pm
by adamstan
In fact it's just opposite ;-)
In Hz/V if C1=1V then C2=2V and C3=4V. That's because in this system voltage is related directly to frequency - there is no exponential converter at VCO input. It has its drawbacks, because to transpose anything you have to multiply instead of adding. So you get rid of expo converter at oscillator, but instead your keyboard has to output exponential CV.

In V/oct system each octave is 1V, and each semitone is 83mV (1/12V). And it's independent from the actual frequency. If C1=1V, then C#1=1.083V, D1=1.166V, and to transpose one octave up you just have to ADD 1V, so C2=2V, C#2=2.083V, D2=2.166V, then, going another octave up, C3=3V, C#3=3.083V, D3=3.166V etc.

So - most synths use V/oct, because in this system CV is related directly to musical pitch, which itself is exponentially related to frequency.

Re: Korg MS-20 Mini

Posted: Thu May 09, 2013 5:06 pm
by Bitexion
That makes perfect sense, I just had a couple of terms confused. :) My basic jist is more or less the same.

Re: Korg MS-20 Mini

Posted: Thu May 09, 2013 8:18 pm
by mute
What kind of impact does it have on the filter/amp cv? Does it really matter?

My FutureRetro Mobius has MIDI In to V/OCT and HZ/V out convertors, which is convenient.. at least for doubling the voices/slaving.

I've seen a lot of convertors out there, from HarvestMan's English Tear module that appears to be a swiss army knife of sorts; to very cheap and simple inline boxes & DIY projects..

Re: Korg MS-20 Mini

Posted: Fri May 10, 2013 3:18 am
by RetroSynthAds
What a surprise! My MS20mini arrived yesterday!

I'll be setting it up beside my original MS20 on the weekend and giving it a good run-through. Love the size and weight of the thing. The only word I can use to describe it is "adorable". :D

Definitely a lot lighter than I thought it would be.

Image

Re: Korg MS-20 Mini

Posted: Fri May 10, 2013 5:15 am
by Kidney05
RetroSynthAds wrote:What a surprise! My MS20mini arrived yesterday!

I'll be setting it up beside my original MS20 on the weekend and giving it a good run-through. Love the size and weight of the thing. The only word I can use to describe it is "adorable". :D

Definitely a lot lighter than I thought it would be.

Image
by what means did you order?

Re: Korg MS-20 Mini

Posted: Fri May 10, 2013 11:59 am
by Analogue Crazy
I have to wait until July / August for mine and i pre-ordered months in advance! Oh well, at least it will make a lovely birthday present :)

Re: Korg MS-20 Mini

Posted: Fri May 10, 2013 1:03 pm
by Psy_Free
RetroSynthAds wrote:What a surprise! My MS20mini arrived yesterday!

I'll be setting it up beside my original MS20 on the weekend and giving it a good run-through. Love the size and weight of the thing. The only word I can use to describe it is "adorable". :D

Definitely a lot lighter than I thought it would be.

Image
Congratulations. I'll be getting one to keep my orig MS-20 company when they appear in shops. I would expect it to be pretty light given that the original isn't exactly overweight & the mini is 14% smaller ;)

Re: Korg MS-20 Mini

Posted: Fri May 10, 2013 2:01 pm
by Bitexion
Meh, now the date on my local store says "unconfirmed 10th june". We'll see...

Re: Korg MS-20 Mini

Posted: Sun May 12, 2013 10:29 pm
by xanadu97
Hybrid88 wrote:It's just a different scaling method essentially.

Which is why the modular in that vid is out of tune when played by the MS.

Just needs a converter, think Korg make one for the MS originally MS-02 it was - mabe a reissue is in order?

Image
I think this will do the same thing.
http://www.paia.com/proddetail.asp?prod=9756K&cat=12

Re: Korg MS-20 Mini

Posted: Mon May 13, 2013 12:01 pm
by pinky_blue
Just got an email regarding my preorder from GAK in the UK:

"Unfortunately we have just been informed that the item you are currently waiting for is still out of stock and may not be available for several more months. The current ETA is December. Sincere apologies for the continued delay with this order."

I followed up with a phone call and it seems there has been a manufacturing delay and they are not getting much info out of Korg in Japan at the moment.

I think I'll leave it on preorder for a while yet until the situation becomes clearer, but if it is really December then I think I might pull my preorder and order one when they're actually available. I still want one but I could do with the cash now so will probably have to save up again. :cry:

Re: Korg MS-20 Mini

Posted: Mon May 13, 2013 5:18 pm
by Re-Member
pinky_blue wrote:I think I'll leave it on preorder for a while yet until the situation becomes clearer, but if it is really December then I think I might pull my preorder and order one when they're actually available. I still want one but I could do with the cash now so will probably have to save up again. :cry:
Most retail stores won't charge you till they ship it, so canceling the pre-order wouldn't be any kind of benefit if you're still planning on buying it when it's available. If anything, you'll probably end up having to wait longer doing so because the pre-order assures you that you'll be getting it when the first batch arrives versus having to go store to store in person and finding out that every one is sold out.