electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links
Forum with support of Syndicator RSS
 FAQFAQ   CalendarCalendar   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   LinksLinks
 RegisterRegister   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in  Chat RoomChat Room 
 Forum index » DIY Hardware and Software » YuSynth
Minimoog Wiring
Post new topic   Reply to topic Moderators: Scott Stites
Page 1 of 1 [6 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
LetterBeacon



Joined: Mar 18, 2008
Posts: 454
Location: London, UK

PostPosted: Thu Jul 02, 2009 11:28 am    Post subject: Minimoog Wiring Reply with quote  Mark this post and the followings unread

Just a quick and probably very simple one:

I can't see the 1V/Octave input jack on the schematic, I can see a third CV input though. Is the CV3 input jack the 1V/Octave input? Looking at the schematic it looks to be just the same as CV2... or maybe I'm misunderstanding what CV2 controls....

Sorry for the newbie post!
Back to top
View user's profile Send private message
yusynth



Joined: Nov 24, 2005
Posts: 1314
Location: France

PostPosted: Thu Jul 02, 2009 12:16 pm    Post subject: Reply with quote  Mark this post and the followings unread

It's the same thing, you can use either one or the other for 1V/octave or CV control. As you can see on the schematic the input resistors are all 100K therefore the CV inputs are all similar and exchangeable.
_________________
Yves
Back to top
View user's profile Send private message Visit poster's website
LetterBeacon



Joined: Mar 18, 2008
Posts: 454
Location: London, UK

PostPosted: Thu Jul 02, 2009 1:09 pm    Post subject: Reply with quote  Mark this post and the followings unread

It appears I have some sizeable gaps in my modular synth knowledge! As I understand it:

CV1 - controls the cutoff frequency of the filter
CV2 - the same as 1V/Oct
1V/Octave - controls the pitch of the sine wave generated by the emphasis

Is this correct? So what happens if I have CV connected to both CV2 & 1V/Oct?

Apologies for the rather basic questions....
Back to top
View user's profile Send private message
yusynth



Joined: Nov 24, 2005
Posts: 1314
Location: France

PostPosted: Thu Jul 02, 2009 1:53 pm    Post subject: Reply with quote  Mark this post and the followings unread

CV1, CV2 and 1V/OCT inputs are all controlling the cut-off frequency of the filter. The voltages at these inputs are summed up and determine the cut-off.
Why do we have that much inputs doing basically the same thing ? It lets you have a keyboard CV connected to the V/OCT input, an ADSR to CV1 and for example a LFO connected to CV2.

_________________
Yves
Back to top
View user's profile Send private message Visit poster's website
LetterBeacon



Joined: Mar 18, 2008
Posts: 454
Location: London, UK

PostPosted: Thu Jul 02, 2009 3:25 pm    Post subject: Reply with quote  Mark this post and the followings unread

Right, I see. So if I had all three connected at the same time, I would get all sorts of weird modulation of the cutoff frequency?

It's all coming together in my head now!
Back to top
View user's profile Send private message
yusynth



Joined: Nov 24, 2005
Posts: 1314
Location: France

PostPosted: Fri Jul 03, 2009 3:57 am    Post subject: Reply with quote  Mark this post and the followings unread

LetterBeacon wrote:
Right, I see. So if I had all three connected at the same time, I would get all sorts of weird modulation of the cutoff frequency?

It's all coming together in my head now!


It's just like the genuine Minimoog, the CUT-OFF is controlled by the keyboard (tracking), by the envelope generator and also by the modulation by VCO3. You can obtain either plain vanila or weird modulations.

_________________
Yves
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic Moderators: Scott Stites
Page 1 of 1 [6 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » DIY Hardware and Software » YuSynth
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Forum with support of Syndicator RSS
Powered by phpBB © 2001, 2005 phpBB Group
Copyright © 2003 through 2009 by electro-music.com - Conditions Of Use