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Buchla format panels discussion
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Would you be interested?
yes
84%
 84%  [ 49 ]
no
15%
 15%  [ 9 ]
Total Votes : 58

Author Buchla format panels discussion
Pfurmel
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PostPosted: Sun Jul 15, 2012 1:12 pm    Post subject: Reply with quote Add User to Ignore List

Valis, that sounds like a really nice project, could you give us some more info on the DIY 190, any links or anything?

I've been interested in building a tube VCA for a while but this would be a perfect excuse to do it!

So yeah, count me as interested...

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Rod Serling Fan Club
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PostPosted: Sun Jul 15, 2012 1:32 pm    Post subject: Reply with quote Add User to Ignore List

valis wrote:

There could even be some sort of interaction between the two


I wonder if the tube VCA circuit could be modified to be a spring driver. Then we would have a tubey spring reverb.

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valis
aliens killed bigfoot


Joined: 30 Sep 2008
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PostPosted: Sun Jul 15, 2012 2:20 pm    Post subject: Reply with quote Add User to Ignore List

Pfurmel wrote:
Valis, that sounds like a really nice project, could you give us some more info on the DIY 190, any links or anything?



Well, there's no 190 project out there and to breadboard the original schematic may be overkill even assuming the parts are still readily available. I meant 190ish by panel design only. If I'm not mistaken, Don's reverb functions like most other spring reverbs. So I'm thinking of using another circuit, much like we will for the 106 mixer.

As far as building a spring, Here's what the PAiA 4712 reverb looks like (thanks dego). It's an easy build and certainly sounds vintagey (oh, the 748). I think it could be very easily tweaked to run on +/-15v



There's also the tombalo reverb

http://www.muffwiggler.com/forum/viewtopic.php?t=36048&highlight=tombo la

and many many more.

Rod Serling Fan Club wrote:
valis wrote:

There could even be some sort of interaction between the two


I wonder if the tube VCA circuit could be modified to be a spring driver. Then we would have a tubey spring reverb.


I thought about this too. I looked at the schematics and I'm not 100% sure as to the best way to accomplish it so I didn't want to promise something more than could be easily be done.
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Rod Serling Fan Club
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PostPosted: Thu Jul 19, 2012 10:48 am    Post subject: Reply with quote Add User to Ignore List

Bare with me for a moment. I've spent a lot of time thinking about the 4U format ideas and discussions in this thread: http://www.muffwiggler.com/forum/viewtopic.php?t=58104&start=80

Being that I am already committed to a 4U format with these buchla panels and like the size and whatnot, I am not so sure I am crazy about developing another DIY 4U format. I am starting to think that using the buchla panel dimensions and add some serge designs to supplement my buchla might be a better choice. The buchla panel dimensions are pretty much the perfect size for 4 serge rows (i.e. 2 VCFs in a panel). This gives you 16 rows in 17" - like STS. I just see myself being far more committed to buchla related stuff but would like to supplement with some CGS/serge. Now ultimately whether or not this will happen depends on if it is something you guys are interested in. I'm not in a rush to get the serge panels out but I thought I should plant the seed and see what people think.

Another thing to think about is that we are beginning to run low on released buchla projects. I know there are various thing in the works but after I kick out panels for the 291, lanterman stuff we will pretty much exhaust what is currently available that is directly buchla/buchla inspired. Of course there is ancillary stuff that can be done like a mixer, or semi-related stuff like a wogglebug but I think you see what I am getting at.

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djs
Veteran Wiggler


Joined: 01 Sep 2010
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PostPosted: Sat Jul 21, 2012 4:45 pm    Post subject: Reply with quote Add User to Ignore List

would they be buchla ish in look, or more serge-ish?
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Rod Serling Fan Club
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PostPosted: Sun Jul 22, 2012 6:19 pm    Post subject: Reply with quote Add User to Ignore List

Serge-ish probably like STS/zthee looking or maybe paperface or both but using the 7x4.25 panel size and mounting style. There would be a jumbler style panel to convert 1/8" jacks to bananas to make them more compatible. Just an idea for now. I know I'd like to have some more serge stuff but more as a supplement than a full on seperate synth.
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valis
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PostPosted: Sun Jul 22, 2012 8:57 pm    Post subject: Reply with quote Add User to Ignore List

It's an interesting thought that I support. The only issue is that I think there'd be disagreement regarding what sort of Serge panels people would want in their system. For example, for me the CV controllers are the most desirable part of the DIY Serge realm. I'd love a VCS, maybe a DUSG, etc. That being said, I'm not really interested in another VCF, VCO, etc (although, as stated, the REQ would be fantastic). I bet there's people out there who feel the opposite of me and want serge modules that are more signal source oriented. All in all, this idea may end up being more trouble than it's worth for you. I'm planning on utilizing some blank buchla panels for a few serge ideas. This might be the easiest strategy.
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PF
Veteran Wiggler


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PostPosted: Thu Aug 16, 2012 4:38 pm    Post subject: Reply with quote Add User to Ignore List

Bumping this one and i wounder if its possible to use J3RK 291 pcb to make a 191 sharp cut filter as it has Lp Bp Hp outs ?
It would be a cool compliment to the 291.

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djangosfire
dimensionally transcendental


Joined: 06 Sep 2009
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PostPosted: Thu Aug 16, 2012 5:23 pm    Post subject: Reply with quote Add User to Ignore List

PF wrote:
Bumping this one and i wounder if its possible to use J3RK 291 pcb to make a 191 sharp cut filter as it has Lp Bp Hp outs ?
It would be a cool compliment to the 291.


I've been considering building this using my pair of 291j boards . . . . right now I'm just trying to figure out what and how the 191 controls work.

Seems like the 191 would require 2x separate 291j's.

If I make one, I'll probably just do a hand drawn panel . . . but, I would be into a small run of double Buchla blanks to accommodate this idea.

OR maybe RSFC is into a run of proper panels?

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Arnoid
Common Wiggler


Joined: 25 Jan 2010
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PostPosted: Fri Aug 17, 2012 2:49 am    Post subject: Reply with quote Add User to Ignore List

maybe a panel for a mutant 259 from beauty of decay combined with 2x 258 pcb's from jerk ?
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Rod Serling Fan Club
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PostPosted: Fri Aug 17, 2012 9:09 am    Post subject: Reply with quote Add User to Ignore List

djangosfire wrote:
PF wrote:
Bumping this one and i wounder if its possible to use J3RK 291 pcb to make a 191 sharp cut filter as it has Lp Bp Hp outs ?
It would be a cool compliment to the 291.


I've been considering building this using my pair of 291j boards . . . . right now I'm just trying to figure out what and how the 191 controls work.

Seems like the 191 would require 2x separate 291j's.

If I make one, I'll probably just do a hand drawn panel . . . but, I would be into a small run of double Buchla blanks to accommodate this idea.

OR maybe RSFC is into a run of proper panels?




There are some things I don't understand about the 191 panel. Internal/external CV? switches on all the CV inputs? Are the red things lamps or buttons?

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djangosfire
dimensionally transcendental


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PostPosted: Fri Aug 17, 2012 1:39 pm    Post subject: Reply with quote Add User to Ignore List

Rod Serling Fan Club wrote:

There are some things I don't understand about the 191 panel. Internal/external CV? switches on all the CV inputs? Are the red things lamps or buttons?


OK, although I've never seen or used a 191 in person - I've been working out the knob/switch/light functions on the panel.

Mostly by watching the Kevin Lightner 2x Youtube Buchla 100 system vids, you can get a sense of how the 191 works:

http://www.youtube.com/watch?v=sOjgUi4uM5c

http://www.youtube.com/watch?v=GW9_Dp4MNrE&feature=relmfu


I understand that when the 191 is in "Bandpass Mode", either the LP or HP outs is non-operational....... so seems like a pair of 291J boards would be required for 191 module??

Here's a quick pic with sorted functions:


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PF
Veteran Wiggler


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PostPosted: Fri Aug 17, 2012 4:12 pm    Post subject: Reply with quote Add User to Ignore List

djangosfire wrote:
Rod Serling Fan Club wrote:

There are some things I don't understand about the 191 panel. Internal/external CV? switches on all the CV inputs? Are the red things lamps or buttons?


OK, although I've never seen or used a 191 in person - I've been working out the knob/switch/light functions on the panel.

Mostly by watching the Kevin Lightner 2x Youtube Buchla 100 system vids, you can get a sense of how the 191 works:

http://www.youtube.com/watch?v=sOjgUi4uM5c

http://www.youtube.com/watch?v=GW9_Dp4MNrE&feature=relmfu


I understand that when the 191 is in "Bandpass Mode", either the LP or HP outs is non-operational....... so seems like a pair of 291J boards would be required for 191 module??

Here's a quick pic with sorted functions:



So this is possible with 2 J3RK's pcb. It would be one hell of a panel.
Thanks Adam for explaining the module. w00t

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If you donīt ask, you donīt get......

Musik
http://www.myspace.com/pouppeefabrikk/music
_______________________________________
Videos
http://www.youtube.com/user/ThePF412
_______________________________________
Record Label
http://www.alfa-matrix.com

amnesia wrote:
So I am questioning if I need the Easel. But I bet I buy it being such a Buchla fanboy.
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mono-poly
Le Cheff


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PostPosted: Sat Aug 18, 2012 2:21 pm    Post subject: Reply with quote Add User to Ignore List

The 191 is more like a moog ladder filter.
I think there aren't vactrols in it at all!

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Votek_Mendo
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PostPosted: Mon Aug 20, 2012 11:34 am    Post subject: Reply with quote Add User to Ignore List

I would love a 191 filter, love this double panel layout
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camelneck
Common Wiggler


Joined: 26 Aug 2011
Last Visit: 18 May 2013

Posts: 122

PostPosted: Wed Aug 22, 2012 4:52 am    Post subject: Reply with quote Add User to Ignore List

diophantine wrote:

- What is the 245 Pulser's "ref" output? I'm not really sure, from looking at the 245 schematic, but I'm thinking it is the oscillator output, in which case we could connect it to the Pulser PCB's saw output.
- Is the Pulser connected internally to the sequencer part? I don't think so, given that the 245's "Pulse Out" jack is right next to the sequencer's "Advance In" jack. The original schematics are separate too.
- Is the 245 Pulser's PW range truly from 0% (never on) to 100% (always on), as the panel would indicate? I hope so.

(snip)

What I'd like to know is:
(1) Is there enough interest in building a 245?
(2) If so, are you willing to make these changes, or would you prefer some alternative?


Here's my 2 cents:

I think building a 245 would be an extremely worthwhile project. I was planning to do this earlier this year, but my "back surgery" screwed up all of my plans to do so.

I know what you mean about the 245 schematics. They seem a bit incomplete and they are very hard to follow. I wish I had a better copy.

I can help you on your first question. As you suspected, the "ref output", which happens to be on a white banana jack, is simply the oscillator output (sawtooth wave) before it is converted into a pulse wave.

Not long ago, Fonik had some VC-Cock PC's that also had an adjustable PW control and a PWM CV input (as well as a Freq CV input). One could simply add some start and stop logic to this design and use them for the clock portion of the 245. However, the PCBs still need to be modified and this clock wouldn't have the same specs as the orignal Buchla 245 clock. Of course, the specs might be better since Fonik's clock is op-amp based.

The question that really puzzles me about the 245 is "What does those 4 toggle switches do?" Also, are they 2 position (off-on) type switches or are they 3 position on-off-on type switches?
Can anybody help me out and explain their functionality????

Again, I would definitely build a 245 clone and offer some PCBs for sale. I have no doubt that they would sell like "hot cakes" in the middle of a Russian winter. I will definitely buy a couple of them.
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keithwin
Learning to Wiggle


Joined: 10 May 2011
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PostPosted: Tue Aug 28, 2012 7:23 am    Post subject: Reply with quote Add User to Ignore List

Will there be a re run of the original set of panels, can't believe I missed it, story of my life :(
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valis
aliens killed bigfoot


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PostPosted: Tue Aug 28, 2012 10:14 am    Post subject: Reply with quote Add User to Ignore List

If I remember correctly RSFC wants about 15 panels accounted for before he does a run so you may have to see if there's enough interest. He does have a few blanks left over.
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valis
aliens killed bigfoot


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PostPosted: Tue Aug 28, 2012 10:18 am    Post subject: Reply with quote Add User to Ignore List

On the note of additional modules, I know RSFC talked about a 208ish module at some point but I'd still like to see something like a dual Lanterman timbre. I'm not sure if that would be of interest to others though.
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Rod Serling Fan Club
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PostPosted: Tue Aug 28, 2012 10:21 am    Post subject: Reply with quote Add User to Ignore List

If there is enough interest I'd do another run of any previous panels. It looks like there is already enough interest to do another run of the 258 panels with the next batch.
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