my Pharmasonic SYS-700 build

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wendallsan
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my Pharmasonic SYS-700 build

Post by wendallsan » Wed Sep 25, 2019 12:53 pm

Hi all,

My build is coming along nicely! 14 of the 16 modules I've put together are working! It is kind of like seeing the Death Star getting built ... so much black!

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Currently building a whole mess of modules by Nonlinear Circuits. Troubleshooting a Nonlinear Circuits Sauce of Unce.

artieTwelve
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Post by artieTwelve » Wed Sep 25, 2019 1:22 pm

Any larger photos or more info on this? Google only shows Sys-100.

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wendallsan
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Post by wendallsan » Wed Sep 25, 2019 6:46 pm

The PCB's and faceplates came from Pharmasonic.

I have a build blog up.
Currently building a whole mess of modules by Nonlinear Circuits. Troubleshooting a Nonlinear Circuits Sauce of Unce.

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Modulart_JP
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Re: my Pharmasonic SYS-700 build

Post by Modulart_JP » Thu Sep 26, 2019 8:37 am

wendallsan wrote:Hi all,

My build is coming along nicely! 14 of the 16 modules I've put together are working! It is kind of like seeing the Death Star getting built ... so much black!

Image
:guinness:
:tu:

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wendallsan
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Post by wendallsan » Tue Oct 15, 2019 10:34 am

A quick update on this project:

I have built my 2 row, 126hp case to house this synth and all modules are complete calibrated. One of my VCO's has a bad range switch that will need to be replaced when I can order a new one, but in the meantime it works great except one of the range switch options doesn't work.

The two remaining gaps in the synth will be filled by a Hexinverter Mutant Brain MIDI-to-CV module and a spring reverb module. The 4MS SISM will also have a black faceplate soon. I decided that this was the module to use for this system, as the SYS-700 works in the 10V range while many of my other modules will only pump out a max of 5V. I also plan to swap out the Intellijel buffered multi for an all-black 2HP model.

My next plans for this case are some black Tolex, some black metal amp corner brackets, and some rubber feet on the bottom. The back is still open, but I also plan to install a back plate to keep things tidy and hide the magic. This is the 3rd 'box case' I've built and I feel like there is actually some slight craftsmanship going on now rather than complete woodshop bumbling. The rails are straight and the box joints are pretty clean. I was able to use a router to round the edges as well, which lends a nice touch. It has me eyeing my last attempt, which was a 3 row 84hp case, and thinking about building it again, but prettier this time, and slapping some Tolex on that as well.

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Currently building a whole mess of modules by Nonlinear Circuits. Troubleshooting a Nonlinear Circuits Sauce of Unce.

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sutekina bipu-on
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Post by sutekina bipu-on » Tue Oct 15, 2019 11:21 am

very cool..... any quirks about the builds on these? i was just thinking about loading up a cart with sys-700 panels & boards :twisted:

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wendallsan
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Post by wendallsan » Tue Oct 15, 2019 2:08 pm

sutekina bipu-on wrote:very cool..... any quirks about the builds on these? i was just thinking about loading up a cart with sys-700 panels & boards :twisted:
Sadly, I can't compare this to any other projects, as this was essentially my first dive into DIY electronics and eurorack. Source the IC's from somewhere reputable-- either from Pharmasonic or your supplier of choice. I got a bunch of 3080's and LM301's off eBay and they were all bad. That alone set me back probably a full week. If this is not your first DIY project, you probably already know that ...

The boards are not too dense usually (there are a couple that seem pretty tight). There are a few surface mount bits on a couple of the boards, but they're not common. This was my fist stab at surface mounts and they all worked great without problems, so it was less difficult than I expected it to be. There are no schematics provided, but they are fairly similar to the original Roland System 700 designs, and people smart enough to read schematics (not me) have been able to use them to provide me with assistance on this project. There is apparently a voltage difference between the original and eurorack and some components have been replaced with modern bits, so the original schematics are not 100% accurate.

It sounds very Roland to me. I've just been feeding it with Mutable Marbles and using that as background music for my workdays. Can't wait to really dive into it here soon.

:nana: :nana:
Currently building a whole mess of modules by Nonlinear Circuits. Troubleshooting a Nonlinear Circuits Sauce of Unce.

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wendallsan
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Post by wendallsan » Tue Oct 15, 2019 4:59 pm

Ah, and wiring the LFO's was a little wonky. The rotary switch on that was panel mounted and a bit of rainbow spaghetti. There were a couple other 16mm pots on a few of the boards which were a little tight to wire up. Otherwise, everything was PCB mounted which was fairly straightforward and all modules being either one or two board designs.
Currently building a whole mess of modules by Nonlinear Circuits. Troubleshooting a Nonlinear Circuits Sauce of Unce.

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wendallsan
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Post by wendallsan » Fri Oct 18, 2019 12:26 pm

In action!

Last edited by wendallsan on Fri Oct 18, 2019 1:52 pm, edited 1 time in total.
Currently building a whole mess of modules by Nonlinear Circuits. Troubleshooting a Nonlinear Circuits Sauce of Unce.

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ishi
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Post by ishi » Fri Oct 18, 2019 1:48 pm

Nice! Always good to hear DIY folk actually make some music.. :sb:

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wendallsan
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Post by wendallsan » Fri Oct 18, 2019 2:04 pm

ishi wrote:Nice! Always good to hear DIY folk actually make some music.. :sb:
It's hard to find the time to play between the builds!
Currently building a whole mess of modules by Nonlinear Circuits. Troubleshooting a Nonlinear Circuits Sauce of Unce.

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ishi
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Post by ishi » Fri Oct 18, 2019 3:24 pm

Yeah, over here my carefully crafted music studio gradually transformed into an electronics lab where playing music is some new sort of adventure. Time to move to a bigger place.. :banana:

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Post by devinw1 » Fri Oct 18, 2019 10:04 pm

Nice! What you using for the drums?

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wendallsan
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Post by wendallsan » Tue Oct 22, 2019 5:27 pm

Got Tolex and corner brackets in place! Also a Music Thing Modular Spring Reverb, a black faceplate Mutant Brain, and a black faceplate for the 4MS SISM rounds out the modules.

:sb: :sb: :sb: :sb:

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Currently building a whole mess of modules by Nonlinear Circuits. Troubleshooting a Nonlinear Circuits Sauce of Unce.

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guest
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Post by guest » Tue Oct 22, 2019 5:34 pm

thats looking really good!
openmusiclabs.com

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wendallsan
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Post by wendallsan » Tue Oct 22, 2019 7:59 pm

guest wrote:thats looking really good!
but its SOUNDING good thanks to all your help!

Many thanks again!

I've been enjoying playing it rather than building it! But of course have about 4 other DIY projects going or planned now. 8-)
Currently building a whole mess of modules by Nonlinear Circuits. Troubleshooting a Nonlinear Circuits Sauce of Unce.

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Post by devinw1 » Tue Oct 22, 2019 11:16 pm

Very nice! Now it really looks like it begs to be patched up and plugged into a big amp! 8-) I

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wendallsan
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Post by wendallsan » Mon Oct 28, 2019 11:16 am

The case now has a back panel installed to keep the inner workings of the synth an absolute mystery to the uninitiated.

The cord coming out the back on the left is the connection to the spring reverb tank. I can push it into the case to 'store' it with relative ease. Saves me from having to take the back panel off to attach/remove the cables from the spring reverb module, which has some pretty flimsy connections to boot, so its probably best that I'm not constantly messing with them.

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Currently building a whole mess of modules by Nonlinear Circuits. Troubleshooting a Nonlinear Circuits Sauce of Unce.

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