Random* Source BOM's for various Builds - both 4U and Euro

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sockmonkey
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Post by sockmonkey » Fri Feb 05, 2016 8:01 am

Jonachi wrote:Great! Then I'll order from yours! =) If you included all of the above that is.
Yes, but I removed 2 2N3904s from your order, so double-check it for sure.

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Jonachi
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Post by Jonachi » Fri Feb 05, 2016 8:35 am

will do. I updated mine with the pieces from yours minus the smt.

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southphillysynths
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Post by southphillysynths » Sun Feb 07, 2016 2:36 pm

Do we know if there are any full res eq kits left anywhere? Or should I just order the parts using a BOM somewhere?

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xonetacular
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Post by xonetacular » Sun Feb 28, 2016 12:16 am

anyone have a cgs wave mult bom?

Dogma
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Post by Dogma » Sun Feb 28, 2016 1:19 am

We are trying to keep this Random*Source only, sorry.....

im sure there are plenty of CGS inofs about?
look up!

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xonetacular
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Post by xonetacular » Sun Feb 28, 2016 11:11 am

Dogma wrote:We are trying to keep this Random*Source only, sorry.....

im sure there are plenty of CGS inofs about?
I'm talking about for the random*source Wavemult/Reseq

I figured it out though
Last edited by xonetacular on Mon Feb 29, 2016 10:27 pm, edited 1 time in total.

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sduck
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Post by sduck » Mon Feb 29, 2016 10:20 pm

fragletrollet wrote::cloud:

Anybody doing (motm) panels for the SOST? Trying to come up with something in fpd, but 7 jacks is such an odd number :zombie:
Something like this?

ImageSon of Storm Tide Flanger II front by Stephen Drake, on Flickr
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xonetacular
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Post by xonetacular » Sat Mar 05, 2016 8:49 pm

anyone got a mouser BOM for DONKS?

I made one the other week and somehow most of it disappeared, and I really dont want to do it again

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xonetacular
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Post by xonetacular » Mon Mar 07, 2016 10:50 am

and what about a 4u variable slope/variable q mouser cart?

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diophantine
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Post by diophantine » Mon Mar 07, 2016 11:26 am


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xonetacular
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Post by xonetacular » Mon Mar 07, 2016 11:33 am

^ :hail:

Dogma
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Post by Dogma » Sun Mar 13, 2016 3:31 am

look up!

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xonetacular
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Post by xonetacular » Sun Mar 13, 2016 10:38 am

prob a dumb question but I'm not well versed in this stuff- on the donks build docs under capacitors it says "2n - C8, C13 -TDK C0G or Styrene (Styroflex)" I can't find any 2n C0G or styrene caps, not sure if they exist- should I use 2.2n C0G or another type of 2n cap instead?

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Milkweg
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Post by Milkweg » Sun Mar 13, 2016 10:52 pm

Dogma wrote:https://au.mouser.com/ProjectManager/Pr ... dca4c4a741

Complete MOuser BOM for Res EQ
Will confirm with BOM when i get home but looking to build the Euro ResEQ.
Do i just need to add jacks and pots to this?

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diophantine
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Post by diophantine » Mon Mar 14, 2016 11:01 am

xonetacular wrote:prob a dumb question but I'm not well versed in this stuff- on the donks build docs under capacitors it says "2n - C8, C13 -TDK C0G or Styrene (Styroflex)" I can't find any 2n C0G or styrene caps, not sure if they exist- should I use 2.2n C0G or another type of 2n cap instead?
Kemet makes a 2n C0G: 80-C326C202J1G-TR

Edit: For many applications a 2n2 would probably do the trick, but it really depends on what the capacitor is doing in the circuit. Without the schematic (or tracing the board) you can't know, but the fact that they are asking for C0G or Styrene is a sign that it is probably a more critical capacitor. 2n2 with a +/- 5% tolerance is still larger than 2n. A good alternative here would be a polypropylene capacitor.

Good reading: http://www.muzique.com/cap_faq.htm

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xonetacular
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Post by xonetacular » Mon Mar 14, 2016 12:01 pm

^thank you, I ended up ordering 2n2 tdk c0g and some 2n polypropylene caps the other day, so I guess I'll stick with using the PP.


I just put together an Extended ADSR BOM, so you would have to order two of these for the dual adsr. I haven't ordered it yet (or the pcb/panel yet for that matter) but maybe someone can check it over. It should have everything except the pots.

R*S Extended ADSR

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xonetacular
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Post by xonetacular » Mon Mar 14, 2016 1:57 pm

I also just put together a BOM for the RS/Ian Fritz CHAQUO + TGTSH

should be everything minus pots. again, check it over I have not ordered/confirmed it yet.


R*S Ian Fritz CHAQUO

R*S Ian Fritz Dual TGTSH

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ehafh
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Post by ehafh » Tue Apr 19, 2016 1:43 pm

why are these random source euro serge pcb/panels so expensive?
they are by far the most expensive ones i've seen on websites.
basically 2 pcbs and a metal panel is 100-150?

is this because all these designs are licensed out or just jacking the prices up for no reason?

i mean it's like 3x the price of comparable pcb/panels.
and it's just a pcb/panel.

i have purchased one thing they make because i thought it looked fun.

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Post by Karma » Tue Apr 19, 2016 2:08 pm

Pcb's with faceplate
Vcfs 66€
Vcfq 66€
Rezonant eq 78€

Pcb's with faceplate and most of the component that are smt presoldered
Wave mult 150€
Ssg 140€


I think it's a good deal for diy, no?

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ehafh
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Post by ehafh » Tue Apr 19, 2016 2:29 pm

do you know if they are presoldered smt's on all boards that use SMT's?
or maybe just some?

all i see in the info on a sale page is -
"Now - for the first time ever and licenced by Serge - the SSG is available as DIY (SMT) kit for Euro."


that would make a lot more sense if so. thanks for info

Karma
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Post by Karma » Tue Apr 19, 2016 3:00 pm

Yes, it's like that :sb:

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ehafh
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Post by ehafh » Tue Apr 19, 2016 4:13 pm

Karma wrote:Yes, it's like that :sb:
very cool

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southphillysynths
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Post by southphillysynths » Thu Apr 21, 2016 9:14 am

ehafh wrote:do you know if they are presoldered smt's on all boards that use SMT's? or maybe just some?
Check on modularaddict.com the pcb and panel prices are fantastic. they are around 70-120 or so depending on the module.

The wave mult and SSG are smt boards that are already built, you just have to add hardware such as jacks, pots, leds, and switches.

The others are through hole. Modular addict has complete kits for the SSG and wave mult still in stock.
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cane creek
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Post by cane creek » Sat May 07, 2016 8:52 am

ehafh wrote:why are these random source euro serge pcb/panels so expensive?
they are by far the most expensive ones i've seen on websites.
basically 2 pcbs and a metal panel is 100-150?
The PCB's and Panels are about the best quality I've seen,
Ralfs PCB\Panels are manufactured in Germany so that cost will be a premium.
I assume Ralf will be paying Serge some kind of fee.
Like mentioned earlier some cost more as SMD has already been done.

The way i see it is once built you have a Eurorack Serge module for a reasonable price, if Ralf didn't do theses then we just wouldn't have any.

I just can't waits to have a full rig of Random Source gear, i ordered the 2 new module PCB/Panels yesterday :yay:

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nordlead
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Post by nordlead » Sat May 07, 2016 4:43 pm

ehafh wrote:why are these random source euro serge pcb/panels so expensive?
they are by far the most expensive ones i've seen on websites.
basically 2 pcbs and a metal panel is 100-150?

is this because all these designs are licensed out or just jacking the prices up for no reason?

i mean it's like 3x the price of comparable pcb/panels.
and it's just a pcb/panel.

i have purchased one thing they make because i thought it looked fun.
There's more than one answer to this - in short, "expensive" is not what I'm aiming for - the focus is really on quality; price is second (or third ;-).

As Karma pointed out, R*S is licensed Serge - this is also true for CGS (but not for Serge coming out of Wisconsin with a way higher price tag).

Also, all SMT boards contain all SMT components, professionally (reflow) soldered in. Apart from the power header and trimpots, there's hardly anything to source / solder.

More importantly (and that makes pricing really difficult) is how much effort goes into a module before it's released - the SSG took 6 or 7 prototypes (in SMT) and a lot of time - (I don't even want to mention the NTO here). DSG is now mk2, but there have been more than 2 version.

Apart from the prototype and R&D side, a ridiculous amount of time goes into (SMT) sourcing - a number of parts (e.g. 1uF film caps, 220n CoGs, some op-amps) are a PITA to source and/or require substantial upfront investment till a batch of SMT boards comes out of production. When you look at the SMT boards, you will have a hard time finding a part that was picked to bring the price down - there are none. You will see parts that look over the top because simpler / cheaper parts have been used in these places. I strongly encourage to listen to the Wave Multipiers middle section or the DSG or the Resonant EQ and compare it with STS or anything else to decide for yourself if the result was worth it!

Also, there's no way to avoid errors - Murphy's law can hit hard in the pcb area! - a number of batches have gone straight to the trash can because of some stupid mistake. Of course it could be fixed on the pcb somehow, but prefer to ship a pcb without that error. In case of the NCOM, there were some tricky errors discovered later, if you bought an early board, you can get a free replacement, just have to pay for shipping.

Last not least, one reason - maybe the main reason - the Serge system still exists today is that someone found a sustainable business model (with prices that start close to USD 4000 per built panel). And that's not so easy to come up with! Doing a run or two is one thing, but being able to constantly offer a quality product is quite a challenge, so pricing has to be such that there's at least a chance to find a modus operandi that makes any sense mid- and longterm.

So as a rule of thumb, if R*S can eventually offer a full (built) Serge panel for somewhere around € 2000-2400 I would consider that a substantial discount compared to current (fully built) panels. And for DIY, if such panel is around EUR 1000 - like Edelweiss II might end up if you include jacks, knobs etc. - and can be built without wiring, hardly any sourcing and in a fraction of the time otherwise needed, I hope that it's still a pretty good deal.

Sorry if this is a bit long-winded, don't want to derail this thread!
Random*Source: Serge, JHaible & more ... (also on facebook.com/randomsource)

(please contact me through email rather than pm: rc at randomsource . net - thanks!)

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