Hey Y'all-- I am proud and happy to announce that the inimitable and amiable Olivier over at http://mutable-instruments.net/ has decided to make THREE (3) of the original Shruti-1 synth kits available to you fools on the Narrat1ve forum!
As you all know, better than me, the Shruti is an AVR based digital synthesizer with a CEM3379 based analog filter. As far as I can tell, this project is kickass both in its execution and its usefulness as an instrument. Since you of this forum are the ones who told me about this project in the first place, I'm excited that this is happening.
NOW: The reason Olivier is doing this is because this first run of the kit is, of course, his first time selling this, too, and he wants design and usage feedback from people who don't suck. He says it better than me in some correspondence we had:
"As soon as I get the PCBs, I want to allocate 3 kits to the guys hanging out at your forum, since they look smart ; and as they have already assembled your sampler they won't be total noobs."
Hear that? You're smart. So he'll hook you up, and in return you can help him (and you) get a better synth. So, if you don't feel confident building one of these, it might be the responsible thing to do to pass. So, with no further fanfare, here's how you order them (via Olivier):
"...directly contact me at mutable.instruments@gmail.com . Kits are 115€ + shipping (I haven't checked for all destinations but it's at most 20€), and include everything except case and power supply."
And tell him you're writing him because of this post on the narrat1ve forum. So those of you who want in on the ground floor, get cracking, and make the rest of us proud!
Finally, I know that probably more than three of you want these, and I'm sorry there are only three made available here. There are some more general release dates coming, and Olivier knows more about that than me. I also know some of you will probably miss out on this who were really excited about the Shruti, but the only fair way I could think of to do this was, well, the random crapshoot that is this post. [FWIW, I'm not even snaking one on the sly :-)]
Thanks again for all your support with WTPA and show Olivier how things get done here at the nerd camp. xoxo
Yeah, i just emailed him about ordering one as well. I have to say, after the sweet dreams demo, I was sold. :) I feel bad since there are only 3 available to this forum, but I hope that things will progress fast enough that everyone who wants one will get one soon. Also, I learned my lesson with the SammichSid, I remember it coming out and thinking how great a kit it seemed to be and I always wanted a SID based synth, and then I kind of forgot about it and I'm deep down in the depths of the waiting list. So I'm trying to not wait on this synth.
Likewise - busy day at work, no time to check audio stuff online - and THIS happens! Oh well - email sent....we'll see! I read on Olivier's site the other day that he's also working on a non-CEM version as well, which might be cool too...
I'm the Shruti-1 guy, and am glad to be here! The 3 kits are gone. What's going to happen next?
- Batch 1: I might have 1 or 2 units left if some people change their mind at the last minute. In this case I'll ping a bunch of people taken at random from those who have posted their email address on the pre-order questionnaire (http://mutable-instruments.net/pre_order_questionnaire) and who match the right conditions (skills to assemble a kit, OK with a case-less kit, etc...) - Batch 2: 3 units will be reserved, again, for the WTPA crowd ; and I'll see what I'll do if there are some units left. - CEM-less batches: since I can "easily" get those (still a lot of parts to stuff into bags!), let me know in advance if you are interested and I'll order parts accordingly. - PCBs: again, let me know so I can re-order accordingly. Scoop: the next batch of PCBs is going to be Platypus-themed. - Batch 3????: thanks to my "genius at viral marketing" (dixit CDM), the project is discussed even in obscure ESQ-1 fetish forums and some guys have started contacting me "hey, I have kept those chips when my ESQ-1 died! Now I am glad something fun can be done with them!". This won't be NOS parts, contrary to what I am using in the first batches, but by pooling the CEM3379s from people happy to see them go into something new and fun, it might be possible to do another batch of 20.
CEM3379s are not the future, though, and I am s/working/studying/g a lot to get a new synth design (same philosophy, AVR, on some aspects simpler and cheaper) but with an analog filter based on modern components (If you want to know I'm going the LM13700 route). Will get the PCBs for the digital part and a bare minimal analog section next week, at the moment sketching bits of schematics, looking up books, solving equations and learning SPICE until I have more breadboard space to experiment.
A last thing: 3 person (including someone whose most advanced project ever built was a patchbay) have assembled the kit and it worked without any problem in all cases. So the edges are not going to be as rough as we all expected. I've written some instructions here: http://mutable-instruments.net/shruti1/assembly
you have come to the right place for dry humor and hardcore hardware testing.. If there is something wrong, someone here will be whining about it.. Biggie needs a girlfriend, you have got a good crew here. Sie sind willkommen ..
Too bad I think I did not make it to the first three - but that's OK, I will be patient! In particular, I'm interested to hear what you will do with your new filter design not based on the CEM. I think it would be cool to hear some A/B comparisons of the CEM version with the LM13700 version you are planning; I'm one of those people that do NOT think there's anything magic in the old stuff, and that modern components ought to be usable to come up with something just as good...
Plus, another thing to think about is creating a sense of "community" around your creation -- with only small runs of 20 kits or so, there won't be all that many users out there, and I think what makes these projects especially fun (like with the x0x, WTPA, midibox, etc...) is the sharing between people. For example, read the "Start, Loop, End Point Adjustment?" thread here, and see all the fun we've been having humping Todd's leg for the past 6+ months! You'll need a critical mass to get that leg humping going, and I worry that a CEM-based version will never get enough people on board...
wow! that list filled up quick. I am really happy that this place here is so alive and doing well. I really like this place for its intimacy and livelyness ... really cool!
Also really cool that I made it on the list on the less intimate electronic-music.com forum for the shruti1! Really getting excited here. My main worry with the kit is - how to house it, once it is done. I think olivier recommends a ns1790 hammond box on his site, but there are so many holes that aren't plain round holes, but rectangular shapes - I am not sure how to cut these forms in an aluminum enclosure- any tips how to do it, or a hint for a easier-to-work-with housing?
I'm not trying to emulate the CEM3379 output and its response curves, so a real A/B comparison won't be straightforward. The main goal is to get something that sounds in the direction I want it to sound (not squelchy or weird because I want to keep it suitable for many different applications ; solid and musical). However, from my limited experience, it has always appeared to me that, compared to SSMs or transistor ladders, the curtis filters sounded more "theoretical", as in "close to what an ideal 24dB/octave filter would sound like" - which is maybe why so many people diss them. So I have the feeling that a textbook-ish thing wouldn't be that far, and that the most complicated thing would be to scale/adjust the response curves (for example in the voltage->exp. current source)... So I agree with you on the "no magic" thing as far as the Curtis filters are concerned ; but I think there's one point you overlooked: while clearly, signal-processing wise, there's nothing exceptional or unattainable in them, the fact that everything needed to process a digital oscillator came pre-bundled into a single chip *is* some kind of magic modern components won't give you. It makes PCBs simpler and more compact ; and for a beginner, approaching a project with 100 points to solder is better than a project with 200... If those chips were made again, even at $10 (instead of $5 for a LM13700, a quad op-amp and everything needed to make it work) I think I would go with them, especially in the context of a polyphonic synth...
Regarding the community, a forum is on its way, let me do the CSS styling first so it won't look exactly like this one (I decided to go lightweight, installed vanilla...) :D And I'll probably try to get every user to fill a little profile with photos of their finished kit, links to songs, etc. All those were things I did for my software ( http://bhajis-garden.org/)
I've reordered a bunch of caps for keys which are circular instead of rectangular, if you prefer them, let me know, and I'll ship that instead with your kit!
I have some cool idea's for cases.. Oliver, do you have PCB dimensional layouts available (X-Y stuff)? I'm all about these hammond extruded cases these days ( http://www.hammondmfg.com/pdf/1455N1202.pdf ), I used one for a midibox CV and it looks great and is reasonably cheap (~$30)
Hmmm you know what? I think other people interested in the Shruti-1 and not hanging out on this forum would love to hear more about that. I can get DXFs from the Eagle files, if that would help. But I'd rather continue this discussion in a more Shruti-1 centric place!
I'll shoot some pics shortly. Yes, the case rocks. I actually did all the machining for mine myself and the case consists of a sliding top and two ends so it is very easy to work on..
It's awesome this is going the way it is. @pichenettes -- thanks again. If you feel like nerding out on LM13700 based designs, holler! I like OTAs in general. It's been a dream of mine to design some discrete ones. TB
@Olivier: Yes, the self-contained chip does certainly make things easier, no doubt. Perhaps one day, these kinds of chips will be made again. In the mean time, looking forward to your new design, and/or getting on the list for the next CEM batch too!
Ok, gates of the forum opened! You won't be disoriented because it's the same forum software (wanted something super simple, but it turned out this thing is an absolute nightmare to style!)
Bummer, I didn't get one, someone beat me to it, bastards ;).
Curious about the new one though, from that incredibly blurry picture, the actual physical dimensions remind me of the Sammich Sid, nice compact design with the LCD and the pots and buttons on top with another board underneath. I hope he's able to make more than 20 this time around. I'm also quite curious what he's decided to use as a filter (if he's including one, which I assume he is).
It seems like there have been some really great DIY kit stuff to come out in just the past few years.
after a few weeks of waiting and working I had time and the bamboo shruti is assembled and running sweet. Now to plug in a few cv footpedals and send out the big15s. Elegantly clean and deeply grungy when needed. Been running it for hours sequencing just the test tone and all the load and seq permutations.
all i meant that if i was starting the case from scratch i would just go for a plain acrylic plate with minimal casing. no biggie, i'm totally happy with it. i just need to fix a midi out problem with it and it's all done...
Still happy with the shruti-1. Shortened some leads to fit the wedge case space but it is a bit problematic in terms of how to keep the clamshell closed. There is an internal wedge in teh design now, but straight line bamboo is not screw freindly and likes to split. The p-8 & bamboo plates may be a better way to go, but the engraved wedge sure looks great. i love the smell of burnt bamboo in the morning, it smells like solder, er victory? I may try a partial glue job on 3 sides to tighten it up. Soundwise its a very stable responsive design and ergonomically faster to tweak than the sammichSID i just built -- i just go button select, twist knob, no menu up buttons to hit afterwards. tweak load and twist and your in a new preset editing. no flicker page or I'd upload images.
I have a question: are you guys happy with the midi in/outs - they are already kinda lose and wobbley on my shruthi - I think I will take them off soon and replace them with off board jacks that are secured with the case. how are yours holding up?
um, I kind of remove and insert cables gingerly. you should see how gingerly i have to insert a cable into my wtpa. a few rather lewd metaphors come to mind! :)
there are mini screw holes which you could attach to whatever back plate you use though is there not?
Glued back/base left side and top/right side and also used the bamboo underblock to support the top on the wedge design. Its aclamshell now, new filter!!!?! awk, well maybe build another. You could glue the midi jacks to the back plate but its a real commitment (a la Gorilla glue...). Its a pretty tight design in the bamboo case, but I love the smell of laser burnt wood.