[sdiy] The start of my modular

[harrybissell]

BUY the PowerOne dual supply... it can be strapped to be either
+/-12V or +/-15V with no problems.

(I don't recommend making your own power supply, its just not a profitable
use of diy time. The parts will probably cost as much as the finished
product)

Use +/-12 to debug. Then later (after class) you can boost to +/-15 and
change
the few, if any... values that have to be recalculated.  Its really not that
hard to
do. In most cases its easier in the long run to make all the modules
compatible
than you add extra regulators

H^) harry

Colin Raffel wrote:

> Hello everyone,
>
> I'm new to this list and the world of Synth DIY, although I have been
> doing other audio DIY stuff (mostly pedals) for a couple of years.
> This January, at my college (Oberlin), I am undertaking the project
> of building a modular from the ground up-specifically building, not
> designing the circuits, because designing a whole modular and
> building it in a month I imagine is near impossible for one person.
> But for 5-6 hours a day this January I plan on building a synth from
> designs from Ray Wilson's site, http://www.musicfromouterspace.com .
> I wanted to see if you guys thought that I had chosen a decent
> selection to get a modular started (and hopefully expand upon
> later).  I am planning on including:
> 1) VC LFO/O (.1hz to 20khz) http://musicfromouterspace.com/
> analogsynth/VCO200503REV01/VCO200503REV01.html
> 2) VCO (10hz to 20khz) http://musicfromouterspace.com/analogsynth/
> vco.html
> 3) VCLFO http://musicfromouterspace.com/analogsynth/coolnewlfo.html
> 4) +/- 12v Power Suply http://musicfromouterspace.com/analogsynth/
> powersupply.html
> 5) Dual VCA http://musicfromouterspace.com/analogsynth/newdualvca.html
> 6) VC State Variable Filter http://musicfromouterspace.com/
> analogsynth/statevariablefilter.html
> 7) Sample Hold/White Noise generator http://musicfromouterspace.com/
> analogsynth/sandh.html
> 8) ADSR http://musicfromouterspace.com/analogsynth/norgate_adsr_001.html
> 9) Simple Ring Mod http://musicfromouterspace.com/analogsynth/
> RingModulator/RingModulator.html
> Then, not from Ray's site, I am hoping to build from Ken Stone's site
> 10) Stompbox adapter http://www.cgs.synth.net/modules/cgs46_sba.html
> and http://www.cgs.synth.net/modules/cgs60_sba.html
>
> Do you think this is a good assortment?  Do you know of any other
> designs/replacements you would choose? I have searched around a bit,
> and it seemed like Ray had the most solid selection of simple modules
> with detailed descriptions and PC board layouts around without it
> just being a kit.  Do you think I should make the +/- 12v power
> supply or should I build a +/-15v one that would (possibly) be more
> compatible with future modules, then separately try to build a +/-
> 12v step down for all of the modules?  Is there a general consensus
> about whether or not Ray's modules will work with +/- 15v or should I
> forget about that possibility?
>
> Thanks everyone for your help, I look forward to a wonderful January
> of soldering, assembling, tweaking and (ehhh) debugging!  I will do
> my best to contribute to discussions when I can and update you all
> when it's done.
>
> -Colin