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MS-20EX Overview Series

 
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CharlesFerraro
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Joined: 06 Feb 2010
Posts: 540
Location: California

PostPosted: Fri Aug 11, 2017 11:35 pm    Post subject: MS-20EX Overview Series Reply with quote

I'll add videos as I make them.


CharlesFerraro wrote:
There is something I messed up on (maybe two things but the other one doesn't really matter). The ring mod setup in MS-20 behaves super strange in that the pulse width control on oscillator 1 seems to fade up the signal of oscillator 2. At first I thought it was simply an AM configuration but it's not! I was only able to mimic the same sound on AL-1 by assigning a macro to the pulse width of osc 1 and mix level of osc 2 so that when the osc 1 pw was pushed to the point of zero output osc 2 would have it's gain all the way up in the mixer. Very strange!

Turns out that behavior is explained by the Ring Mod in the MS-20 actually being an XOR configuration. A modern synth that I can think of with this same configuration is Steinberg's Retrologue 2.



Interesting to note that the output waveform of the square LFO has a DC offset because it is unipolar. Haven't listened to see if the triangle/saw is bipolar but I suspect it is. It would be neat if the saw up/down transformations are actually offset too while the tri remained centered but again I'll have to test it out.
If anyone would like me to find the LFO rates of the 20 lmk. It would be interesting to find out if I can get a faster rate with it tempo sync'd at 300bpm vs AMS boosted.
Since I can't use an AMS mixer source for LFO rate (or in the very least the option is greyed out in the editor), as of right now, I don't think it's possible to keytrack the LFO rate to tune it like I did with the LFO's in AL-1. There might be a trick or two to examine in the patch panel but I haven't gone over that section yet.




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Last edited by CharlesFerraro on Mon Aug 14, 2017 4:58 am; edited 1 time in total
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chris
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Joined: 29 Jan 2002
Posts: 405
Location: Belgium

PostPosted: Sat Aug 12, 2017 5:57 am    Post subject: Reply with quote

Thanks Charles for this series of tutorials.
Very intuitive and instructive.
Helps to tackle some dark areas of the MS20EX.
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Chris (Belgium)
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CharlesFerraro
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Joined: 06 Feb 2010
Posts: 540
Location: California

PostPosted: Sat Aug 12, 2017 7:26 am    Post subject: Reply with quote

You're welcome chris, thanks for the positive feedback. If you have any question feel free to ask. Also if you have some MS-20 tips of your own definitely post them up!
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Computer: MacBook Pro 13" 2.66GHz Core2Duo, 8g RAM, 320gb HDD, Sierra 10.12.5
Software: Cubase Pro 8, Kore/Kontakt players, Skanner, Alchemy
Modules/Synths: EHX VoiceBox, Korg Kronos 2-61
Racks: Tascam TA-1VP, Behringer ADA8000, RME Fireface 800
Speakers: Blue Sky MediaDesk MKII 5.1, Mackie HR624 MK2(x5) with Tannoy TS10
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