| Author |
Message |
funkyfarm
Joined: Jan 21, 2007
Posts: 583
Location: France
Audio files: 3
|
 Posted: Tue Jul 22, 2008 9:18 am Post subject:
Buchla 110 ?!
Subject description: Dual Voltage Controlled Gate |
  |
|
Buchla 110 - Dual Voltage Controlled Gate
By looking at the schematic, does anyone understand what B110 module do ?
It's basically a comparator with an external control to vary threshold ?
No control over length/pw ?
i can't find no info via google...
cheers,
ff
http://rubidium.dyndns.org/~magnus/synths/companies/buchla/ |
|
|
Back to top
|
|
 |
Peake
Joined: Jun 29, 2007
Posts: 1113
Location: Loss Angeles
Audio files: 3
|
Posted: Tue Jul 22, 2008 10:14 am Post subject:
 |
|
|
| "IT 122" dual trannie. 40+ year-obsolete parts... |
|
|
Back to top
|
|
|
cbm
Joined: Oct 25, 2005
Posts: 381
Location: San Francisco
|
|
|
Back to top
|
|
|
Coriolis
Joined: Apr 11, 2005
Posts: 616
Location: Stilling, Denmark
|
|
|
Back to top
|
|
|
mono-poly
Joined: Jul 07, 2004
Posts: 937
Location: Rotterdam, Netherlands
Audio files: 2
|
| Posted: Tue Jul 22, 2008 3:35 pm Post subject:
|
|
|
I am looking for one.
 |
|
|
Back to top
|
|
|
vtl5c3
Joined: Sep 08, 2006
Posts: 425
Location: PDX
Audio files: 13
|
| Posted: Wed Jul 23, 2008 8:02 am Post subject:
|
|
|
| It's a dual VCA. Works well with the 180 dual EG. I tthink I have a press n Peel layout for it somewhere.... |
|
|
Back to top
|
|
|
vtl5c3
Joined: Sep 08, 2006
Posts: 425
Location: PDX
Audio files: 13
|
|
|
Back to top
|
|
|
funkyfarm
Joined: Jan 21, 2007
Posts: 583
Location: France
Audio files: 3
|
| Posted: Sat Jul 26, 2008 11:54 am Post subject:
|
|
|
so dumb...
for sure GATE means VCA in Buchla vocabulary
Thank you for the links.
| mono-poly wrote: | I am looking for one.
|
 |
|
|
Back to top
|
|
|
funkyfarm
Joined: Jan 21, 2007
Posts: 583
Location: France
Audio files: 3
|
| Posted: Sat Jul 26, 2008 12:02 pm Post subject:
|
|
|
Model 110 Dual Voltage Controlled Gate
Two voltage controlled amplifiers generally used in conjunction with a Model 180 attack generator to control the envelope of applied signals.
what makes a good VCA/EG combination ?
it's related to envelope slope and vca "gain scale" (lin/log) characteristic ? |
|
|
Back to top
|
|
|
Peake
Joined: Jun 29, 2007
Posts: 1113
Location: Loss Angeles
Audio files: 3
|
| Posted: Sat Jul 26, 2008 1:55 pm Post subject:
|
|
|
| funkyfarm wrote: | Model 110 Dual Voltage Controlled Gate
Two voltage controlled amplifiers generally used in conjunction with a Model 180 attack generator to control the envelope of applied signals.
what makes a good VCA/EG combination ?
it's related to envelope slope and vca "gain scale" (lin/log) characteristic ? |
Yes to your last statement.
Check out the amplitude shape of acoustic sounds. Struck or plucked instruments are quite telling. A good combo will best reproduce what the ear has evolved to expect. And then allow you to go beyond that with variable response for different slopes, ala the Wiard combo.
The ear also enjoys the reverse of the acoustic slope- it ends up sounding like the signal output of a compressor. The OB SEM amplitude response curve is a bit like the output of a compressor- it's "on" longer than it's quick fall to silence at the end of the envelope, as opposed to a very quick strike which very quickly decays to silence, but slows down as it goes.
"Linear through Log". |
|
|
Back to top
|
|
|
funkyfarm
Joined: Jan 21, 2007
Posts: 583
Location: France
Audio files: 3
|
| Posted: Sat Jul 26, 2008 5:03 pm Post subject:
|
|
|
waouh !
"Linear through Log."
Thank you. |
|
|
Back to top
|
|
|
inform3r
Joined: Sep 03, 2006
Posts: 59
Location: nyc
|
| Posted: Sat Jun 27, 2009 3:32 pm Post subject:
|
|
|
| This seems like a very nice and simple discrete VCA. I get all of the connections except for the pads labeled "B". What are those for? |
|
|
Back to top
|
|
|
inform3r
Joined: Sep 03, 2006
Posts: 59
Location: nyc
|
| Posted: Sat Jun 27, 2009 3:40 pm Post subject:
|
|
|
| I forgot to ask.... Any recommendation on which transistors to go with on this module? |
|
|
Back to top
|
|
|
LetterBeacon
Joined: Mar 18, 2008
Posts: 454
Location: London, UK
|
| Posted: Sun Jun 28, 2009 8:54 am Post subject:
|
|
|
| inform3r wrote: | | This seems like a very nice and simple discrete VCA. I get all of the connections except for the pads labeled "B". What are those for? |
Looks like they're for the 'Base' pin of the nearby transistors. |
|
|
Back to top
|
|
|
Peake
Joined: Jun 29, 2007
Posts: 1113
Location: Loss Angeles
Audio files: 3
|
| Posted: Mon Jun 29, 2009 2:45 pm Post subject:
|
|
|
It appears that Linear Systems have a replacement for the IT122 (the NTE replacement was only a single transistor!!). This is definitely worth looking into.
_________________
We are selling emotions, there are no emotions in a grid. -mwagener
"IC 741. Sometimes you don't want fidelity." -Small Bear Electronics Catalog |
|
|
Back to top
|
|
|
vtl5c3
Joined: Sep 08, 2006
Posts: 425
Location: PDX
Audio files: 13
|
| Posted: Tue Jun 30, 2009 12:27 pm Post subject:
|
|
|
A friend of mine built it with standard PNP/NPN transistors, i.e. 2N3906/2N3904. I haven't tried it myself, but it ought to work.
| inform3r wrote: | | I forgot to ask.... Any recommendation on which transistors to go with on this module? |
|
|
|
Back to top
|
|
|
inform3r
Joined: Sep 03, 2006
Posts: 59
Location: nyc
|
| Posted: Fri Jul 03, 2009 10:42 am Post subject:
|
|
|
| vtl5c3 wrote: | A friend of mine built it with standard PNP/NPN transistors, i.e. 2N3906/2N3904. I haven't tried it myself, but it ought to work.
| inform3r wrote: | | I forgot to ask.... Any recommendation on which transistors to go with on this module? |
|
LetterBeacon, you're absolutely right! Thanks. I must have not had my coffee that day!
Romeo, Thanks for the transistor suggestion. So your friend built this and this press n' peel is good to go? If so, it will be amazing to have a discrete VCA that is super-duper small with really low parts count! I'm excited. Verbos said (on his Blog) that the 110 is an excellent VCA to pair with the 281 EG's for making percussive sounds. Hope I can achieve that from this build. Thanks again Romeo. |
|
|
Back to top
|
|
|
ericcoleridge
Joined: Jan 16, 2007
Posts: 889
Location: NYC
|
| Posted: Fri Jul 03, 2009 11:23 am Post subject:
|
|
|
| mono-poly wrote: | I am looking for one.
|
Mono,
Do you know if 100 modules use the same power distribution/connectors as 200 and 200e modules? |
|
|
Back to top
|
|
|
LetterBeacon
Joined: Mar 18, 2008
Posts: 454
Location: London, UK
|
| Posted: Fri Jul 03, 2009 11:30 am Post subject:
|
|
|
| I want to know how many other Buchla press n peel layouts vtl5c3 has tucked away on his hard drive! |
|
|
Back to top
|
|
|
ericcoleridge
Joined: Jan 16, 2007
Posts: 889
Location: NYC
|
| Posted: Fri Jul 03, 2009 9:26 pm Post subject:
|
|
|
| OT here, I apologize; ...but, as far as 100 stuff goes, I'd be very happy to have a layout for the 140 Timing Pulse Generator, or 194 Bandpass. I understand there's a whole book of 100 series layouts floating around-- I wonder if these modules are in there? |
|
|
Back to top
|
|
|
mono-poly
Joined: Jul 07, 2004
Posts: 937
Location: Rotterdam, Netherlands
Audio files: 2
|
| Posted: Sat Jul 04, 2009 12:57 am Post subject:
|
|
|
| ericcoleridge wrote: | | mono-poly wrote: | I am looking for one.
|
Mono,
Do you know if 100 modules use the same power distribution/connectors as 200 and 200e modules? |
All Buchla 100 modules i bought haven't got connectors.
I use MOTM style connectors for my 100 series stuff. |
|
|
Back to top
|
|
|
inform3r
Joined: Sep 03, 2006
Posts: 59
Location: nyc
|
| Posted: Sat Jul 04, 2009 9:22 am Post subject:
|
|
|
| ericcoleridge wrote: | | I understand there's a whole book of 100 series layouts floating around-- I wonder if these modules are in there? |
Eric. Don't kill us like that! Are you serious? I wonder how to get at it? Do we have a better chance of finding the lost ark?
-John |
|
|
Back to top
|
|
|
vtl5c3
Joined: Sep 08, 2006
Posts: 425
Location: PDX
Audio files: 13
|
| Posted: Sat Jul 04, 2009 5:18 pm Post subject:
|
|
|
[quote="inform3r"][quote="vtl5c3"]A friend of mine built it with standard PNP/NPN transistors, i.e. 2N3906/2N3904. I haven't tried it myself, but it ought to work.
| inform3r wrote: | | Romeo, Thanks for the transistor suggestion. So your friend built this and this press n' peel is good to go? { |
My friend built it, along with the EG (180?), but he did his own DIY layout, electronotes style (drawing the traces on the copper with a sharpie marker).
The press and peel layout that I posted is untested, but it matches the schematic. As I am humanoid, I do make mistakes.
| inform3r wrote: | | If so, it will be amazing to have a discrete VCA that is super-duper small with really low parts count! I'm excited. Verbos said (on his Blog) that the 110 is an excellent VCA to pair with the 281 EG's for making percussive sounds. Hope I can achieve that from this build. Thanks again Romeo. |
Hey, no problemo. I'm all about sharing the Buchla DIY love! Thanks for passing on the 281 and 110 tip. I hadn't thought of pairing them. |
|
|
Back to top
|
|
|
vtl5c3
Joined: Sep 08, 2006
Posts: 425
Location: PDX
Audio files: 13
|
| Posted: Sat Jul 04, 2009 5:21 pm Post subject:
|
|
|
Hmm... not really, but compatible. Most 100 series modules are +15 and ground. Some also have a +24V rail. Off the top of my head, none of them have a negative rail. Less headroom than dual rail systems, but Buchla uses line level for audio, so it's not that big of a deal.
| ericcoleridge wrote: | | mono-poly wrote: | I am looking for one.
|
Mono,
Do you know if 100 modules use the same power distribution/connectors as 200 and 200e modules? |
|
|
|
Back to top
|
|
|
vtl5c3
Joined: Sep 08, 2006
Posts: 425
Location: PDX
Audio files: 13
|
| Posted: Sat Jul 04, 2009 5:27 pm Post subject:
|
|
|
Haha... not that many. 
I have a few that I drew on grid paper, back in the 'old days'. They're easy to scan in and trace in photoshop. I think I did do a layout for the 180 EG, and definitely the 100 series ring mod (185?).
| LetterBeacon wrote: | | I want to know how many other Buchla press n peel layouts vtl5c3 has tucked away on his hard drive! |
|
|
|
Back to top
|
|
|
|
Forum index » DIY Hardware and Software
FAQ
Calendar
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
Chat Room
