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Bridechamber CGS SubOsc

Bridechamber CGS SubOsc

2008-04-01 by clickmrmike

So Scott, exactly how have you wired your version of the CGS SubOsc?
The panel is cool, but I don't completely grok the switched pot layout.

Thanks,
mrmike

Re: [ModularSynthPanels] Bridechamber CGS SubOsc

2008-04-01 by Scott Deyo

Hey Mike,

I haven't gotten to mine yet, but here's the plan:

Use dual 100k or dual 50k lin pots.
You'll need two CV Mixer PCBs.

The different divisions from the PCB go first to the pots. Use a 
system, like "higher division goes to upper lugs of pot". All those 
pots are attenuators.
Let's do an example Alt Group of pots. You'll have six of these groups.
The Alt Group A, A/2, A/4, A/8 is wired together via 47k resistors to 
the bottom lug of that Alt Switch, so when you throw the switch up, you 
will get this Alt Group (the upper group) of divisions.
Alt Group A/6, A/16, A/32, A/64 is wired the same way to the top lug of 
the Alt Switch.
The middle lug of the switch goes to any pad on the mixer (there are 
three mixers -- two external and one on the SubOsc PCB) at pin 2 of the 
TL072 (past the summing resistors, which we used up on the panel.)
This is cool, because it allows up to switch between useful audio 
divisions and control/ clock divisions for each channel, independently.

The inversion of each group on the external mixers is from pin 1 of the 
TL072, via a 1k resistor, just like it's done on the mixer of the 
SubOsc PCB.

Mixer one is just channel A.
Mixer two is just channel B.
Mixer three is the multiplications and such.
The Mix switches are easy -- For Mix A, just take the output of channel 
A to the outside lug, and the middle lug to the summing node for the 
Mixed channel Mixer. Do the same for the Mix B switch.
Those switches make the Mix Output more versatile. With both switches 
off, you just get the multiplication on the Mix Out. But if you're 
going for super-super tone hugeness of the universe, turn it all on! : 
)

Does that make sense? I know it's confusing. If you want, I can start 
building mine now too and take some pics.
It's a very cool module, though. I added all the things I wish my 
original had.

Cheers,
Scott Deyo
The Bridechamber
contact@...
http://www.bridechamber.com
Show quoted textHide quoted text
On Apr 1, 2008, at 3:41 PM, clickmrmike wrote:

> So Scott, exactly how have you wired your version of the CGS SubOsc?
>  The panel is cool, but I don't completely grok the switched pot 
> layout.
>
>  Thanks,
>  mrmike
>
>  
>

Bridechamber CGS SubOsc

2008-05-19 by James Elliott

What pots & knobs do people recommend for the CGS SubOsc mounted behind the bridechamber panel?

Thanks,
Jim

Re: [ModularSynthPanels] Bridechamber CGS SubOsc

2008-05-19 by Scott Deyo

If 24mm dual-gang pots are too big, try Piher dual-gang --  
531-pc16dc-100k

Knobs are from Jameco --
http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId= 
-1&storeId=10001&catalogId=10001&productId=264990
are the right ones, I believe.

I'm going to give a concerted effort to catch up on all the new  
modules, for support purposes and so I can have them in my own modular
: )
So I hope to be updating all the module pages in the next couple weeks.

Cheers,
Scott Deyo
The Bridechamber
contact@...
http://www.bridechamber.com
Jealous Edison Record Kompany
http://www.jealousedison.com
Show quoted textHide quoted text
On May 19, 2008, at 12:07 AM, James Elliott wrote:

> What pots & knobs do people recommend for the CGS SubOsc mounted  
> behind the bridechamber panel?
>
> Thanks,
> Jim
>
>
>  
>

Re: [ModularSynthPanels] Bridechamber CGS SubOsc

2008-05-21 by James Elliott

Scott, you wrote in the email below:
"Does that make sense? I know it's confusing. If you want, I can start 
building mine now too and take some pics.
It's a very cool module, though. I added all the things I wish my 
original had."

That would be awesome if you could start building this thing. My board is stuffed and now I'm trying to figure out how to wire it to the panel.....

Also, you mentioned a 100k dual ganged pot, 531-pc16dc-100k, do you know of any 50k dual ganged pots? Ken mentioned in his new forum @ electro-music.com that 100k pots installed with 47k resistors and the 22k resistor will result in a log type response - and that in order to achieve a linear response one would have to use 100k resistors and a 47k resistor instead. Well.... I've already stuffed my board, and I've had extremely bad luck in the past unsoldering components on the CGS boards (my solder sucker lifts solder pads off CGS boards), so I would prefer to use the 50k resistors if you know of any, If not, I can live with it.

Thanks,
Jim


----- Original Message ----
From: Scott Deyo <contact@...>
To: ModularSynthPanels@yahoogroups.com
Sent: Tuesday, April 1, 2008 5:01:10 PM
Subject: Re: [ModularSynthPanels] Bridechamber CGS SubOsc

Hey Mike,

I haven't gotten to mine yet, but here's the plan:

Use dual 100k or dual 50k lin pots.
You'll need two CV Mixer PCBs.

The different divisions from the PCB go first to the pots. Use a 
system, like "higher division goes to upper lugs of pot". All those 
pots are attenuators.
Let's do an example Alt Group of pots. You'll have six of these groups.
The Alt Group A, A/2, A/4, A/8 is wired together via 47k resistors to 
the bottom lug of that Alt Switch, so when you throw the switch up, you 
will get this Alt Group (the upper group) of divisions.
Alt Group A/6, A/16, A/32, A/64 is wired the same way to the top lug of 
the Alt Switch.
The middle lug of the switch goes to any pad on the mixer (there are 
three mixers -- two external and one on the SubOsc PCB) at pin 2 of the 
TL072 (past the summing resistors, which we used up on the panel.)
This is cool, because it allows up to switch between useful audio 
divisions and control/ clock divisions for each channel, independently.

The inversion of each group on the external mixers is from pin 1 of the 
TL072, via a 1k resistor, just like it's done on the mixer of the 
SubOsc PCB.

Mixer one is just channel A.
Mixer two is just channel B.
Mixer three is the multiplications and such.
The Mix switches are easy -- For Mix A, just take the output of channel 
A to the outside lug, and the middle lug to the summing node for the 
Mixed channel Mixer. Do the same for the Mix B switch.
Those switches make the Mix Output more versatile. With both switches 
off, you just get the multiplication on the Mix Out. But if you're 
going for super-super tone hugeness of the universe, turn it all on! : 
)

Does that make sense? I know it's confusing. If you want, I can start 
building mine now too and take some pics.
It's a very cool module, though. I added all the things I wish my 
original had.

Cheers,
Scott Deyo
The Bridechamber
contact@...
http://www.bridechamber.com
Show quoted textHide quoted text
On Apr 1, 2008, at 3:41 PM, clickmrmike wrote:

> So Scott, exactly how have you wired your version of the CGS SubOsc?
>  The panel is cool, but I don't completely grok the switched pot 
> layout.
>
>  Thanks,
>  mrmike
>
>  
>

Re: [ModularSynthPanels] Bridechamber CGS SubOsc

2008-05-21 by Mark

On 5/21/08, kwote uno put forth:
>could you point me to the thread that Ken is in? i've been to the 
>modular part of electro music's forum but was unaware Ken had his 
>own subforum.

http://electro-music.com/forum/topic-26140.html

Re: [ModularSynthPanels] Bridechamber CGS SubOsc

2008-05-21 by Scott Deyo

The Alphas will fit:
31VW405-F

Scott Deyo
The Bridechamber
contact@...
http://www.bridechamber.com
Jealous Edison Record Kompany
http://www.jealousedison.com
Show quoted textHide quoted text
On May 21, 2008, at 1:04 AM, James Elliott wrote:

> Scott, you wrote in the email below:
>  "Does that make sense? I know it's confusing. If you want, I can start
>  building mine now too and take some pics.
>  It's a very cool module, though. I added all the things I wish my
>  original had."
>
>  That would be awesome if you could start building this thing. My 
> board is stuffed and now I'm trying to figure out how to wire it to 
> the panel.....
>
>  Also, you mentioned a 100k dual ganged pot, 531-pc16dc-100k, do you 
> know of any 50k dual ganged pots? Ken mentioned in his new forum @ 
> electro-music.com that 100k pots installed with 47k resistors and the 
> 22k resistor will result in a log type response - and that in order to 
> achieve a linear response one would have to use 100k resistors and a 
> 47k resistor instead. Well.... I've already stuffed my board, and I've 
> had extremely bad luck in the past unsoldering components on the CGS 
> boards (my solder sucker lifts solder pads off CGS boards), so I would 
> prefer to use the 50k resistors if you know of any, If not, I can live 
> with it.
>
>  Thanks,
>  Jim
>
>  ----- Original Message ----
>  From: Scott Deyo <contact@...>
>  To: ModularSynthPanels@yahoogroups.com
>  Sent: Tuesday, April 1, 2008 5:01:10 PM
>  Subject: Re: [ModularSynthPanels] Bridechamber CGS SubOsc
>
>  Hey Mike,
>
>  I haven't gotten to mine yet, but here's the plan:
>
>  Use dual 100k or dual 50k lin pots.
>  You'll need two CV Mixer PCBs.
>
>  The different divisions from the PCB go first to the pots. Use a
>  system, like "higher division goes to upper lugs of pot". All those
>  pots are attenuators.
>  Let's do an example Alt Group of pots. You'll have six of these 
> groups.
>  The Alt Group A, A/2, A/4, A/8 is wired together via 47k resistors to
>  the bottom lug of that Alt Switch, so when you throw the switch up, 
> you
>  will get this Alt Group (the upper group) of divisions.
>  Alt Group A/6, A/16, A/32, A/64 is wired the same way to the top lug 
> of
>  the Alt Switch.
>  The middle lug of the switch goes to any pad on the mixer (there are
>  three mixers -- two external and one on the SubOsc PCB) at pin 2 of 
> the
>  TL072 (past the summing resistors, which we used up on the panel.)
>  This is cool, because it allows up to switch between useful audio
>  divisions and control/ clock divisions for each channel, 
> independently.
>
>  The inversion of each group on the external mixers is from pin 1 of 
> the
>  TL072, via a 1k resistor, just like it's done on the mixer of the
>  SubOsc PCB.
>
>  Mixer one is just channel A.
>  Mixer two is just channel B.
>  Mixer three is the multiplications and such.
>  The Mix switches are easy -- For Mix A, just take the output of 
> channel
>  A to the outside lug, and the middle lug to the summing node for the
>  Mixed channel Mixer. Do the same for the Mix B switch.
>  Those switches make the Mix Output more versatile. With both switches
>  off, you just get the multiplication on the Mix Out. But if you're
>  going for super-super tone hugeness of the universe, turn it all on! :
>  )
>
>  Does that make sense? I know it's confusing. If you want, I can start
>  building mine now too and take some pics.
>  It's a very cool module, though. I added all the things I wish my
>  original had.
>
>  Cheers,
>  Scott Deyo
>  The Bridechamber
> contact@...
> http://www.bridechamber.com
>
>  On Apr 1, 2008, at 3:41 PM, clickmrmike wrote:
>
>  > So Scott, exactly how have you wired your version of the CGS SubOsc?
>  > The panel is cool, but I don't completely grok the switched pot
>  > layout.
>  >
>  > Thanks,
>  > mrmike
>  >
>  >
>  >
>
>  
>

Re: [ModularSynthPanels] Bridechamber CGS SubOsc

2008-05-21 by James Elliott

Awesome! I really need to start searching for stuff in the mouser catalog vs. the search function on their website..... I spent at least an hour last night searching for dual gang pots, and the 31VW405-F that you just identified never showed up. *sigh* I'm catching on, slowly.

-Jim

----- Original Message ----
From: Scott Deyo <contact@...>
To: ModularSynthPanels@yahoogroups.com
Sent: Wednesday, May 21, 2008 8:33:42 AM
Subject: Re: [ModularSynthPanels] Bridechamber CGS SubOsc

The Alphas will fit:
31VW405-F

Scott Deyo
The Bridechamber
contact@...
http://www.bridechamber.com
Jealous Edison Record Kompany
http://www.jealousedison.com
Show quoted textHide quoted text
On May 21, 2008, at 1:04 AM, James Elliott wrote:

> Scott, you wrote in the email below:
>  "Does that make sense? I know it's confusing. If you want, I can start
>  building mine now too and take some pics.
>  It's a very cool module, though. I added all the things I wish my
>  original had."
>
>  That would be awesome if you could start building this thing. My 
> board is stuffed and now I'm trying to figure out how to wire it to 
> the panel.....
>
>  Also, you mentioned a 100k dual ganged pot, 531-pc16dc-100k, do you 
> know of any 50k dual ganged pots? Ken mentioned in his new forum @ 
> electro-music.com that 100k pots installed with 47k resistors and the 
> 22k resistor will result in a log type response - and that in order to 
> achieve a linear response one would have to use 100k resistors and a 
> 47k resistor instead. Well.... I've already stuffed my board, and I've 
> had extremely bad luck in the past unsoldering components on the CGS 
> boards (my solder sucker lifts solder pads off CGS boards), so I would 
> prefer to use the 50k resistors if you know of any, If not, I can live 
> with it.
>
>  Thanks,
>  Jim
>
>  ----- Original Message ----
>  From: Scott Deyo <contact@...>
>  To: ModularSynthPanels@yahoogroups.com
>  Sent: Tuesday, April 1, 2008 5:01:10 PM
>  Subject: Re: [ModularSynthPanels] Bridechamber CGS SubOsc
>
>  Hey Mike,
>
>  I haven't gotten to mine yet, but here's the plan:
>
>  Use dual 100k or dual 50k lin pots.
>  You'll need two CV Mixer PCBs.
>
>  The different divisions from the PCB go first to the pots. Use a
>  system, like "higher division goes to upper lugs of pot". All those
>  pots are attenuators.
>  Let's do an example Alt Group of pots. You'll have six of these 
> groups.
>  The Alt Group A, A/2, A/4, A/8 is wired together via 47k resistors to
>  the bottom lug of that Alt Switch, so when you throw the switch up, 
> you
>  will get this Alt Group (the upper group) of divisions.
>  Alt Group A/6, A/16, A/32, A/64 is wired the same way to the top lug 
> of
>  the Alt Switch.
>  The middle lug of the switch goes to any pad on the mixer (there are
>  three mixers -- two external and one on the SubOsc PCB) at pin 2 of 
> the
>  TL072 (past the summing resistors, which we used up on the panel.)
>  This is cool, because it allows up to switch between useful audio
>  divisions and control/ clock divisions for each channel, 
> independently.
>
>  The inversion of each group on the external mixers is from pin 1 of 
> the
>  TL072, via a 1k resistor, just like it's done on the mixer of the
>  SubOsc PCB.
>
>  Mixer one is just channel A.
>  Mixer two is just channel B.
>  Mixer three is the multiplications and such.
>  The Mix switches are easy -- For Mix A, just take the output of 
> channel
>  A to the outside lug, and the middle lug to the summing node for the
>  Mixed channel Mixer. Do the same for the Mix B switch.
>  Those switches make the Mix Output more versatile. With both switches
>  off, you just get the multiplication on the Mix Out. But if you're
>  going for super-super tone hugeness of the universe, turn it all on! :
>  )
>
>  Does that make sense? I know it's confusing. If you want, I can start
>  building mine now too and take some pics.
>  It's a very cool module, though. I added all the things I wish my
>  original had.
>
>  Cheers,
>  Scott Deyo
>  The Bridechamber
> contact@...
> http://www.bridechamber.com
>
>  On Apr 1, 2008, at 3:41 PM, clickmrmike wrote:
>
>  > So Scott, exactly how have you wired your version of the CGS SubOsc?
>  > The panel is cool, but I don't completely grok the switched pot
>  > layout.
>  >
>  > Thanks,
>  > mrmike
>  >
>  >
>  >
>
>  
>

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