Korg Mono/Poly

Hi Valery,

thanks for your tips, the Nord Modular G2 idea is an absolutely great one!

All the best
Sophie



--- In korg_mono-poly@yahoogroups.com, Valery Carpentier <vcarpentiermailinglists@...> wrote:
>
> Hi Sophie,
> 
> The "Synth secrets" series on the Sound on Sound website is a very good 
> start to understanding synthesis
> 
> http://www.soundonsound.com/search?url=%2Fsearch&Section=8&Subject=12
> 
> A lot of other very good articles there as well.
> 
> You could also do worse than download the Nord Modular G2 demo and play 
> with it, as you will be building your own (software) synths and apply 
> what you've learned in the Synth Secrets articles.
> 
> http://www.nordkeyboards.com/main.asp?tm=Downloads&cldwn=Nord_Modular_G2&osdwn=osw
> 
> Then it is just a case of applying that knowledge to the MP, some of the 
> names are slightly different.
> 
> Vale
> 
> lakaband_in_uk wrote:
> >
> > Hi Alain,
> >
> > and thank you so much for this clarification. I know what an 
> > oscillator or a filter is, but I have to admit that I could do with a 
> > bit more knowledge.
> >
> > In fact, I always wonder as to how to get some more knowledge about 
> > synthesis and haven't found anything suiting my needs yet, really: 
> > either one has to look into books - and sometimes things can be a bit 
> > too abstract - or one can attend courses but apart from the online 
> > Berklee College in the US (that promotes learning via softwares such 
> > as Reason and Absynth) I haven't found anything.
> >
> > How did you (Alain and all of you reading this) acquire you knowledge 
> > about synthesis, apart from your own trying and tweaking?
> >
> > Thanks for reading!
> >
> > --- In korg_mono-poly@yahoogroups.com 
> > <mailto:korg_mono-poly%40yahoogroups.com>, "Alain" <hubertalain@> 
> > wrote:
> > >
> > > Hello Sophie.
> > >
> > > Well, is it simply the terms used that you don't quite get, like 
> > VCO, VCF, FM, and such ?
> > > Or is it what the result of those mods would be ?
> > > Or maybe a combination of the two ?
> > >
> > > Let's take them one by one:
> > >
> > > 1-VCO -> Cutoff FM
> > >
> > > Would take the output of the oscillators, and control the frequency 
> > of the filter cutoff. That would result in FM (audio frequency 
> > modulation) of the filter. The equivalent of turning the cutoff knob 
> > really really fast.
> > >
> > > 2-VCO -> VCA FM
> > >
> > > Same principle, but controlling the volume instead of the filter 
> > cutoff. (actually that would be technically called AM, not FM, for 
> > amplitude modulation)
> > >
> > > 3-VCO1 -> VCO(x) FM
> > >
> > > Taking the output of oscillator 1 to control the pitch of other 
> > oscillators. Frequency modulating other VCOs. (Like you can already do 
> > now with MG1 controlling the pitch but much, much faster)
> > >
> > > 4-LFO speeds increase by adding caps
> > >
> > > Getting faster speeds from MG1 or MG2 by adding, or better yet 
> > changing values of, timing capacitors (or resistors) in the electronic 
> > circuits that compose those LFOs. Which ones ?
> > > Well to know that, you have to have some technical knowledge or 
> > background in electronics.
> > >
> > > 5- Audio in -> VCF/VCA
> > >
> > > Add a connector to allow external signals (other synths, electric 
> > guitar, etc...) to pass through the filter (VCF), or final amp (VCA) 
> > for using the MP as an "effect" box.
> > >
> > > 6-Suboscillators via divide circuit to every square
> > >
> > > Build additional circuits to effectively add sub-oscillators 
> > (oscillators playing one or more octave bellow the source) to each of 
> > the square wave output of the oscillators.
> > >
> > >
> > > Hope this helps a little...
> > >
> > >
> > > Alain.
> > >
> > >
> > >
> > > --- In korg_mono-poly@yahoogroups.com 
> > <mailto:korg_mono-poly%40yahoogroups.com>, Sophie Caroline Bernhard 
> > <sophiebernhard@> wrote:
> > > >
> > > > Hi Johan, Alain and all,
> > > >
> > > > I have to admit it, I am a littler lost with modifications
> > > >
> > > > Where could I get some infos to understand better about those
> > > > modifications Johan wants to make?
> > > > Is there a book, a course (a secret potion)?
> > > >
> > > > Many thanks in advance for your time in this
> > > >
> > > > Sophie
> > > >
> > > >
> > > >
> > > > On 11 Feb 2010, at 21:51, "Alain" <hubertalain@> wrote:
> > > >
> > > > > Good mod choices, Johan.
> > > > > I like the CHD Elektro MIDI retrofit better than the Mungo. It's a
> > > > > bit more expensive, but comes already complete and is a more 
> > elegant
> > > > > solution for the MP. But that's only my personal opinion.
> > > > >
> > > > > A word of advice,if I may. When dealing with mods that concern the
> > > > > VCOs, extra care must be taken, as those SSM2033 are close to
> > > > > impossible to find as replacement chips, if ever a mod destroys one
> > > > > (or more) of them.
> > > > >
> > > > > For this reason, I'd suggest starting with the filter mods. If ever
> > > > > you inadvertently destroy the SSM2044, there are plenty available
> > > > > (and inexpensive) on Ebay to replace it. Moreover, it is in a DIP
> > > > > socket for easy removal. The SSM2033 are also in a socket, but have
> > > > > their Tempco resistors glued on them and soldered to the main pcb.
> > > > >
> > > > > The LFO speed increase is entirely feasible, but also be aware that
> > > > > doing so to MG2 might not trigger the arpeggiator correctly 
> > passed a
> > > > > certain speed (cpu interrupt timing limitation).
> > > > >
> > > > > Sub-osc via divide is a great idea to get a little more "meat" out
> > > > > of the low end.
> > > > >
> > > > > Do you have any schematics to start with, or are you going to
> > > > > engineer them from scratch ?
> > > > >
> > > > > Alain.
> > > > >
> > > > > --- In korg_mono-poly@yahoogroups.com 
> > <mailto:korg_mono-poly%40yahoogroups.com>, "JohanI" <johan.inkinen@>
> > > > > wrote:
> > > > > >
> > > > > > Hi everyone! Thanks for the welcome! :)
> > > > > >
> > > > > > Well I've been thinking of doing these mods:
> > > > > >
> > > > > > VCO->Cutoff FM
> > > > > > VCO->VCA FM
> > > > > > VCO1->VCO(x) FM
> > > > > > LFO speeds increase by adding caps
> > > > > > Audio in -> VCF/VCA
> > > > > > Suboscillators via divide circuit to every square
> > > > > >
> > > > > > Oh, and also adding midi, either via Mungo Enterprises Midi
> > > > > Retrofit or this one : http://www.chd-el.cz/index.php?id=409 
> > <http://www.chd-el.cz/index.php?id=409>
> > > > > >
> > > > > > I consider myself a beginner in synthmodding, have done a couple
> > > > > on the korg poly800 (moog slayer, 12/24db filterswitch, fm800 
> > and so
> > > > > on) and siel exp80 (similar architecture as poly800). Also working
> > > > > on fitting the Mungo Enterprises midikit in a Juno6 atm.
> > > > > >
> > > > > >
> > > > > >
> > > > > > --- In korg_mono-poly@yahoogroups.com 
> > <mailto:korg_mono-poly%40yahoogroups.com>, "Alain" <hubertalain@> wrote:
> > > > > > >
> > > > > > > Yes Johan, welcome!
> > > > > > >
> > > > > > > I've already done a simple mod on mine, to convert arpeggiator
> > > > > trigger input from s-trigger to pulse.
> > > > > > > I also plan to add a sample-and-hold with the clock source as
> > > > > either MG1 or MG2...
> > > > > > >
> > > > > > > Tell us what you want to mod on your MP!
> > > > > > >
> > > > > > > Alain.
> > > > > > >
> > > > > > >
> > > > > > > --- In korg_mono-poly@yahoogroups.com 
> > <mailto:korg_mono-poly%40yahoogroups.com>, Florian Anwander
> > > > > <fanwander@> wrote:
> > > > > > > >
> > > > > > > > Hello Johan,
> > > > > > > >
> > > > > > > > welcome to the group!
> > > > > > > >
> > > > > > > > Comment from new user:
> > > > > > > > > hello. i would like to do some modifications on my mp and
> > > > > come here
> > > > > > > > > for help...
> > > > > > > >
> > > > > > > > Let us know what you want to modify.
> > > > > > > >
> > > > > > > > Florian
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > > >
> > > >
> > >
> >
> >
>