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 Forum index » Instruments and Equipment » Modular Synthesis
Help building a small modular
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Sir Ruff



Joined: Oct 10, 2006
Posts: 33
Location: Cincinnati, USA

PostPosted: Mon Apr 28, 2008 7:21 pm    Post subject: Help building a small modular Reply with quote  Mark this post and the followings unread

I came across a small AS 3U 19" case the other day thus overcoming my biggest hurdle I've had thus far in beginning modular construction.

So here's what I'm trying to construct: specifically something for weird noises, something that will make sounds none of my other synths can (read nothing that normal mono/polyphonic synths, or the even the mighty Xpander can make). I realize this may not be entirely feasible in such a small rack size, but I'm more interested in the hands on experimental aspect than a huge variety of sound.

Using the size of my case as the main limitation (84 hp), here is my preliminary shortlist of things I probably should have:
A130 or 131 VCA
A138 Mixer
A-141 VC ADSR (or something smaller)
multiple
a filter of some sort-the vactrol filter sounds interesting, but is somewhat lage
some sort of osc sound source-perhaps the MFB digital osc.

Here are a couple things that seem like good power for size type modules:
Livewire Vulcan Modulator
A-117 Digital Noise / Random Clock / 808 Sound

that is all I can think of so far... But with all of the above, that pretty much fills all my space, going 4hp over. So I'm asking for any suggestions ( or alternative) to what I've already got (perhaps in the filter). The key is lots of possibilities/uses for the size!
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amnesia



Joined: Jul 29, 2006
Posts: 149
Location: amnesia

PostPosted: Mon Apr 28, 2008 11:29 pm    Post subject: Reply with quote  Mark this post and the followings unread

i am trying to have a 2rack euro system for live use , i have a 8 rack modular...

here is what i want to do, it covers all bases.
http://www.flickr.com/photos/cray5656/2450465451/sizes/o/
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Sir Ruff



Joined: Oct 10, 2006
Posts: 33
Location: Cincinnati, USA

PostPosted: Tue Apr 29, 2008 5:39 pm    Post subject: Reply with quote  Mark this post and the followings unread

amnesia wrote:
i am trying to have a 2rack euro system for live use , i have a 8 rack modular...

here is what i want to do, it covers all bases.
http://www.flickr.com/photos/cray5656/2450465451/sizes/o/


That looks pretty dope. How did you save that image? (I'm using that flash modular planner, but don't think there's a way to save the images).

Here is my current refined lineup:

-either the Livewire dalek or vulcan

-MFB osc-01/02… 3xDCO or VCO… not sure what the general opinion of these is, but given the large amount of options, it seems very reasonable for the price. I know the DCO is supposed to sound kind of odd, but both are fairly stable. Probably not the best quality, but cheap

-plan b Model 25 Multi-tasking Audio Processor (or something similar-but this seems to have a lot of functions for the size/price)

-plan b Model 9 Mixer attenuator-maybe there is a cheaper doepfer alternative

Basic:
A-140 ADSR
A-132 dual VCA (perhaps unnecessary as the model 25 has a VC VCA?)
1 4 HP a-180 basic multiple vs. the slightly more advanced 8HP plan b model 29 dynamic multiple… I am wondering if I could get away with the standard doepfer multiple.

Depending solely on the multiple type (if the doepfer VCA is removed), that leaves 14 or 18 HP of space left for a filter. Of which type I'm not sure of yet! Probably something basic and small, but the various vactrol filters look good. The plan b's is 14 HP, while the doepfer is 18.

I have been reading about dual timbral gates, as apparently they can be used as low-pass filters, but I don't quite understand how they work. I am not set on having a multi-mode filter, so is this perhaps a functional option?
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amnesia



Joined: Jul 29, 2006
Posts: 149
Location: amnesia

PostPosted: Wed Apr 30, 2008 5:35 am    Post subject: Reply with quote  Mark this post and the followings unread

on PC you hit Print screen key then opwn paint and crop it and save
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fireclown



Joined: Feb 02, 2008
Posts: 13
Location: Fresno CA

PostPosted: Wed Apr 30, 2008 6:04 pm    Post subject: what id consider doing Reply with quote  Mark this post and the followings unread

doepfer 119 ext input module, 110 VCO, 101-2 vactrol lowpass gate, 132 dual vca, 148 dual s&h, 114 dual ring mod, 147 VCLFO, 145 LFO, with 30hp left for EG's, VCO's, VCF's, mixers or whatever you think is needed additionally. 1 or 2 EG's and an additional oscillator would have you a two or three voice instrument needing only an external mixer to make it work.
If you had access to another (or better) ring modulator, that would buy you some space, a noise/random generator might be a crucial element to consider.
have fun!
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Sir Ruff



Joined: Oct 10, 2006
Posts: 33
Location: Cincinnati, USA

PostPosted: Thu May 01, 2008 10:26 am    Post subject: Re: what id consider doing Reply with quote  Mark this post and the followings unread

fireclown wrote:
doepfer 119 ext input module, 110 VCO, 101-2 vactrol lowpass gate, 132 dual vca, 148 dual s&h, 114 dual ring mod, 147 VCLFO, 145 LFO, with 30hp left for EG's, VCO's, VCF's, mixers or whatever you think is needed additionally. 1 or 2 EG's and an additional oscillator would have you a two or three voice instrument needing only an external mixer to make it work.
If you had access to another (or better) ring modulator, that would buy you some space, a noise/random generator might be a crucial element to consider.
have fun!


thanks for the various suggestions! Your layout would definitely be cheaper I think than my current proposed setup... I guess I'm potentially willing to spend more for certain units (such as mixers) that will offer more utility in such a small space (such as the plan b stuff).

the plan multi-function audio processor actually has a ring mod and a VCA, thus killing two birds with one stone....

as far as random noise, I was thinking of the a-117 digital noise/808 source... seems to be good for a number of uses...
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fireclown



Joined: Feb 02, 2008
Posts: 13
Location: Fresno CA

PostPosted: Thu May 01, 2008 6:47 pm    Post subject: its all fun and games until somebody gets hurt ;) Reply with quote  Mark this post and the followings unread

Im definitely intrigued by making the most of a small/limited case space.
I dont think I value multiples and mixers as much these days, although attenuators very much so. If a module or patch goes through some attenuation, its much more flexible and tasty than if not. Im starting to think one waveform output/osc per patch might be more effective than trying to mix odd and even harmonics for no particular reason. The doepfer vactrol low pass gate and another filter of choice alongside a decent ring mod would offer several timbral choices or layers if you can control them simultaneously. The ext input module probably makes the most of any setup, I wish I had one!
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Sir Ruff



Joined: Oct 10, 2006
Posts: 33
Location: Cincinnati, USA

PostPosted: Fri May 02, 2008 1:25 pm    Post subject: Re: its all fun and games until somebody gets hurt ;) Reply with quote  Mark this post and the followings unread

fireclown wrote:
Im definitely intrigued by making the most of a small/limited case space.
I dont think I value multiples and mixers as much these days, although attenuators very much so. If a module or patch goes through some attenuation, its much more flexible and tasty than if not. Im starting to think one waveform output/osc per patch might be more effective than trying to mix odd and even harmonics for no particular reason. The doepfer vactrol low pass gate and another filter of choice alongside a decent ring mod would offer several timbral choices or layers if you can control them simultaneously. The ext input module probably makes the most of any setup, I wish I had one!


The space limitation is my way of setting a boundary (to prevent the wallet hurt so to speak!)-I can try this whole modular thing out, and take it from there without seeing more rack space to be filled!

re: multiples/mixers-I think that is what's leading me towards the more expensive (and more versatile) plan b mixer/attentuator, and multiple... although they take up more space, the attenuation factor would increase their overall utility.

I'm am very interested in the vactrol filter-I have read that the plan b one sounds better, but is also more expensive than the doepfer (and doesn't have resonance)... having another "normal" filter would be good too (but at this point, may not be possible)...

I hadn't considered the external input module, but you are right: to maximize the usefulness of a small modular in a studio, it sounds required.

I have gotten some recommendations from a real modular nut-he is saying start as small as possible and go from there to test the waters... so I might cut back a bit on like the livewire, and maybe even the filter... just start with a noise source, an env/lfo and a mixer and multi-processing unit like the plan b...
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fireclown



Joined: Feb 02, 2008
Posts: 13
Location: Fresno CA

PostPosted: Sat May 03, 2008 4:55 am    Post subject: multiple options Reply with quote  Mark this post and the followings unread

I picked up a number of short 1/8" (mono 1 female in 2 male out and some vice versa) Y cables at Radio Shack for dirt cheap a few years ago, and Im sure the better electronics store has them for sale inexpensively enough. they provide most of my patch multiplication, so I cant say its not important to have, but you can save valuable space this way.
Oh yeah, I dig those Plan B modules, nice ideas. theres a lot of great stuff out there! check out ebay, interesting stuff is popping up.
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hpsounds



Joined: May 02, 2008
Posts: 3
Location: France | Iceland

PostPosted: Sat May 03, 2008 6:21 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi,

You should at least have one multimode filter. The Doepfer A-121 could be a good start - you could find it second hand. I've got one since I've got my modular synth.

You have to know that Doepfer VCAs (a-131 v2) are a bit noisy and zippy with pure tone or soft sound (it doesn't matter with hard, bass sounds), that's why I've ordered a Cwejman VCA-2P. Cwejman modules are expensive but the quality is top. This module is really narrow (10 HP) and has a lot of functionality.

Have a nice time turning these knobs !

Wink

Hedi K.
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Per



Joined: Jun 09, 2004
Posts: 165
Location: Sweden
Audio files: 7
G2 patch files: 3

PostPosted: Tue May 06, 2008 2:25 pm    Post subject: Reply with quote  Mark this post and the followings unread

I would go for the Doepfer Low pass gate (vactrol based) instead of a VCA. A bit slower, but with a lot of carachter and very nice tool to both filtering and amplification. The Doepfer multimode filter is not so exciting, their vactrol or Korg MS clone filters are better, and so are the AS multimode filter. The MFB VCO is stable and much bang for the bucks. If You have enough space in the rack, the Analogue systems VCO is also delivers much for the money.
Per
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Sir Ruff



Joined: Oct 10, 2006
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Location: Cincinnati, USA

PostPosted: Thu May 08, 2008 7:37 pm    Post subject: Reply with quote  Mark this post and the followings unread

Per wrote:
I would go for the Doepfer Low pass gate (vactrol based) instead of a VCA. A bit slower, but with a lot of carachter and very nice tool to both filtering and amplification. The Doepfer multimode filter is not so exciting, their vactrol or Korg MS clone filters are better, and so are the AS multimode filter. The MFB VCO is stable and much bang for the bucks. If You have enough space in the rack, the Analogue systems VCO is also delivers much for the money.
Per


thanks for the suggestion... the doepfer sounds like the cheaper way to go compared to the plan b.
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Per



Joined: Jun 09, 2004
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PostPosted: Thu May 08, 2008 11:26 pm    Post subject: Reply with quote  Mark this post and the followings unread

Yes, they are, and Analog Solutions is even cheaper. But there are one thing to keep in mind. There is a difference in thinking between European constructions and American. The US gear (Blacet, Plan B, Cyndustries Bananalogue and more) are often more versatile, and can be used for more purposes and produce a wider palette of sounds. European designs (Doepfer, Analogue Systems, Analogue Solutions) do more what they say on the front plate.
The Wiard Noise Ring can as an example work as a random CV source, a pattern CV source, a variable noise source, a clock source and even as sound processor. On the other hand, it is not so easy to understand from the start, it take some time to learn how it works.
The Doepfer digital noise module gives random CV and noise that can be filtered from white down to random pulses. Cheaper, smaller in size, but less of a challenge.
For people interested in experimental sounds, I would guess that the best performance in relation to size and money, is using Frack Rack system with modules from Blacet, Wiard and other american companies that supplies that system. It is not only the difference in modules avaliable, the Frack Rack is also much cheaper than the sturdy but expensive Doepfer racks. Per
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