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Suboscillator
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Please be positive and constructive with your questions and comments.

Suboscillator

by creekree on Fri Sep 07, 2007 10:48 pm

i've played a little bit with a suboscillator and would like to put it into my b0x.
where to insert the suboscs signal?
i'd say into the vca, but is that correct? and if so, which is the input of the vca? i dont have the schematics around atm, so if someone could tell me that'd be nice.
further subosc suggestions are welcome as well!

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by guest on Sat Sep 08, 2007 6:32 am

you should try feeding it into
both the vcf and vca
and see which one sounds better

to feed the vca
use a resistor and capacitor
just like r121 and c21
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by LoopStar on Sun Sep 09, 2007 7:42 am

It'd be great if you'd publish the schematics to the suboscillator when you've completed the mod. I'm very interested into equipping my x0x with one!
website: http://www.myownmusic.de/artistpage_info.php?artist_id=141458
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Re: Suboscillator

by jerwin on Sat Nov 08, 2008 7:24 am

I would love to see this subosscillator in action.

Let me know how you go!
x0xb0x Parts Store
Rare Parts Available Now
http://www.ableideas.com/x0xb0x
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Re: Suboscillator

by creekree on Sun Nov 09, 2008 6:15 pm

sorry guys, in the end i did not include the subosc in my x0x, i decided to make it be a part of my slowly growing modular synth.

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Re: Suboscillator

by bcbox on Sun Nov 09, 2008 9:27 pm

This is the sub oscillator I did a a few years back when I was testing various mods for the x0xi0
kit. It's a digital suboscillator based on the MC-202. It works if anyone wants to give it a go.

Image
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Re: Suboscillator

by stevenclements on Wed Dec 10, 2008 11:07 am

bcbox wrote:This is the sub oscillator I did a a few years back when I was testing various mods for the x0xi0
kit. It's a digital suboscillator based on the MC-202. It works if anyone wants to give it a go.

Image


yer so cool
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Re: Suboscillator

by hamburgers on Wed Jun 03, 2009 2:53 pm

to get to 12v and ground on the LM2903, is that pin 8 and 4, respectively?


http://www.national.com/images/pf/LM2903/00570901.pdf
Image

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Re: Suboscillator

by bcbox on Wed Jun 03, 2009 3:20 pm

to get to 12v and ground on the LM2903, is that pin 8 and 4, respectively?
yes.
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Re: Suboscillator

by maxtim on Sun Jun 07, 2009 3:10 am

bcbox wrote:This is the sub oscillator I did a a few years back when I was testing various mods for the x0xi0
kit. It's a digital suboscillator based on the MC-202. It works if anyone wants to give it a go.


Nice 8) Verry cool
Thank you !

Great future project, I think I'll add that one in.

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Re: Suboscillator

by hamburgers on Sun Jun 07, 2009 1:46 pm

mine (mostly) works on a 2-position switch. left out the diodes and -2 PWM option

-2 oct works great, but -1 oct has a problem somewhere. when i press around on some pads with my fingers i can get -1 to work... will sort that out eventually

very cool, thanks


edit: fixed; works now
Image

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Re: Suboscillator

by nizzleone on Thu Nov 19, 2009 1:55 pm

I was thinking about making this, but with no switch and just two 100k B pots, one for each octave. I assume I would have to stick the the diodes before the pots. Does anyone have any input on if that would work with the current values, or if I should change anything.

Thanks.
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Re: Suboscillator

by hamburgers on Mon Mar 29, 2010 11:26 am

I've built 3 of these now, and I'm finding that I have to connect the (+) pin (8) of the 2903 to pin 7 of the 4011 to get it to work properly (I'm using pins 4, 5, and 6 of the 4011).

:?
Image

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Re: Suboscillator

by rarara on Sat Apr 03, 2010 10:31 am

anyone got any clips of how this sounds?
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Re: Suboscillator

by hamburgers on Sat Apr 03, 2010 11:52 am

rarara wrote:anyone got any clips of how this sounds?


http://share.ovi.com/media/mome_rath.public/mome_rath.10191

this demo has some warble @ -2oct... I built a new one from the ground up that doesn't do that
Image

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Please be positive and constructive with your questions and comments.