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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
MFOS Dual VCO's
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Skrog Productions



Joined: Jan 07, 2009
Posts: 712
Location: Scottish Borders
Audio files: 80

PostPosted: Fri Mar 12, 2010 7:08 am    Post subject: MFOS Dual VCO's
Subject description: squeezing 2 into a panel in my quest for free panel space(gate) :D
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Next project... 2 MFOS VCO's into one panel , i've 4 of rays vco's so i'm doing 2 of these.

Adding PWM level in.
2 each log cv level in's.
Changing relevant resistors & caps to bring them up to Ray's latest vco version Rev D 2009.


Ready to wire shortly then re-calibrate them.
Here's the first module ready to connect up to the panel....


MFOS VCO 2010 Skrog.JPG
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MFOS  VCO  2010   Skrog.JPG



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Last edited by Skrog Productions on Fri May 14, 2010 11:37 am; edited 1 time in total
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jordroid



Joined: Jan 17, 2010
Posts: 193
Location: ithaca, new york

PostPosted: Fri Mar 12, 2010 7:56 am    Post subject: Reply with quote  Mark this post and the followings unread

Very commendable! I have just spent a bunch of time listening to your music on myspace also, great stuff, very impressive.
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loydb



Joined: Feb 04, 2010
Posts: 369
Location: Providence, RI

PostPosted: Fri Mar 12, 2010 8:45 am    Post subject: Reply with quote  Mark this post and the followings unread

Nice!
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Skrog Productions



Joined: Jan 07, 2009
Posts: 712
Location: Scottish Borders
Audio files: 80

PostPosted: Fri May 14, 2010 11:02 am    Post subject: Reply with quote  Mark this post and the followings unread

Jorderoid ..
Loydb..

Thanks for having a look , cheers Smile

Another 2 Vco's are coming soon , fab.

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Skrog Productions



Joined: Jan 07, 2009
Posts: 712
Location: Scottish Borders
Audio files: 80

PostPosted: Fri May 14, 2010 11:26 am    Post subject: Reply with quote  Mark this post and the followings unread

Hello.....
Now have 4 working & tuned mfos Vco's , really happy with their stability after 20min warm up .

2 more vco's to build yet , will be a 6 vco machine in the autumn Smile .

i played some notes into my RM1X midi sequencer that was hooked up to the Poly-dac 4 channel midi to cv converter then patched up 4 , single vco monosynths , 2 with wave folders and 2 with sub osc and recorded this (with help from a friend).

Anyone familiar with a classic sci-fi/horror story with a tall man from Morningside
will smile at the wrong key & bum notes Very Happy heh .


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PHOBoS



Joined: Jan 14, 2010
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Location: Moon Base
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PostPosted: Sat May 15, 2010 3:44 pm    Post subject: phantasm.mp3 Reply with quote  Mark this post and the followings unread

Posted Image, might have been reduced in size. Click Image to view fullscreen.
"You play a good game boy, but the game is finished, now you die"

Awesome! I could just feel the tall man creep up on me,..
Thanks for doing this one.

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Last edited by PHOBoS on Sat May 15, 2010 11:06 pm; edited 1 time in total
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droffset



Joined: Feb 02, 2009
Posts: 486
Location: new zealand
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PostPosted: Sat May 15, 2010 4:14 pm    Post subject: Reply with quote  Mark this post and the followings unread

Ha, I love those movies! Good stuff.
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Skrog Productions



Joined: Jan 07, 2009
Posts: 712
Location: Scottish Borders
Audio files: 80

PostPosted: Mon May 17, 2010 10:39 am    Post subject: Reply with quote  Mark this post and the followings unread

Very Happy
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Photon



Joined: Mar 22, 2005
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PostPosted: Tue Jun 01, 2010 5:39 pm    Post subject: Reply with quote  Mark this post and the followings unread

Dave,
What value pots did you use for CV attenuation?
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kkissinger



Joined: Mar 28, 2006
Posts: 1212
Location: Kansas City, Mo USA
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PostPosted: Wed Jun 02, 2010 9:08 am    Post subject: Reply with quote  Mark this post and the followings unread

Fantastic synthesizer and sounds. One can only imagine what you will do as you add more VCOs to your system.
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Skrog Productions



Joined: Jan 07, 2009
Posts: 712
Location: Scottish Borders
Audio files: 80

PostPosted: Wed Jun 02, 2010 1:07 pm    Post subject: Reply with quote  Mark this post and the followings unread

Photon wrote:
Dave,
What value pots did you use for CV attenuation?



Hi Photon


I just used 100K pots as all of my attenuators on all the modules , i have cut down on extra patch cables by a few re-designs of some panels that commonly needed an audio mixer or cv mixer and built a mixer in (vcf's & vca's).

Dave.

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Skrog Productions



Joined: Jan 07, 2009
Posts: 712
Location: Scottish Borders
Audio files: 80

PostPosted: Wed Jun 02, 2010 1:15 pm    Post subject: Reply with quote  Mark this post and the followings unread

kkissinger wrote:
Fantastic synthesizer and sounds. One can only imagine what you will do as you add more VCOs to your system.



Hi Kevin

Thanks for having a look & listen , you will hear the synth working out on my 2 projects "Epicyclus & Orchard" , There will be new, fresh sequency stuff on the upcoming EM summer solstice performing as Epicyclus, looking forward to hearing all the perfomers on the day sunny

Dave.

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