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Thierry's been at it again, and his latest mod sounds great! The mod, demonstrated by Thierry himself in this video, is a small circuit soldered onto the main Etherwave circuit board. In addition to adding nearly 1.5 octaves of range on the low-end, one of the biggest improvements, in his own words, is that "the bass range of this instrument does not longer sound like a dying motorbike". I can't wait to order one myself!

Learn more about the mod at his website: http://theremin.tfrenkel.com

16 Comments

omhoge
omhoge 3/25/2011 1:07 PM
Well Done Thierry!

I love the mod for the EWPro, and want to try this one out too.

Naturally there are limits to how many instruments private individual builders can produce. Thierry's hitting an important mark here by improving Moog instruments that are already available to players en masse.

Still, I'm such a big fan of his work now, I would love to play a theremin totally of his own design.

Can't wait to see his next innovation!
Amethyste
Amethyste 3/25/2011 3:30 PM
Thierry,
Tu es si chouette. :)
Thomas Grillo
Thomas Grillo 3/25/2011 7:11 PM
I want this mod.
AlKhwarizmi
AlKhwarizmi 3/27/2011 8:01 PM
Wow, this is impressive. Let's see if in the summer holidays I can devote some time to learning how to use a soldering iron, and then get one if it is available :)
Thierry
Thierry 3/28/2011 4:22 PM
@Amethyste: Merci, c'est très aimable. Heureusement la vidéo est un peu flou et tu ne m'as pas encore vu de plus près... ;-)
AlKhwarizmi
AlKhwarizmi 3/29/2011 12:44 PM
This is why I need this mod (video for laughs only): http://www.youtube.c...
Thierry
Thierry 3/29/2011 1:00 PM
Wow, actually that sounds like a farting elephant... :o)

With the module, you'll be able to play that not only less "farty" but also one octave lower if you want.

Another question... Why do many thereminists, among them you and "thereminstrel" only show their more or less wobbly paunch. Can't understand that... Do you fear to show your face to the public?
AlKhwarizmi
AlKhwarizmi 3/29/2011 1:10 PM
That way I can keep track of my theremin progress and my diet at the same time ;)

No, seriously... yes, in my case it started because I was embarrassed to show my face to the public (especially since my facial expression when playing is generally not nice, I think that happens to most beginning thereminists). Now I'm somewhat less embarrassed but I have gotten used to filming myself that way and it's hard to break the habit.

I'm really looking forward to get my hands on that mod and try to play that piece in a musical way :)
Thierry
Thierry 4/6/2011 6:49 PM
Things advance... This time I decided to not to build these modules on hole matrix board (like the EPVM1345) but to order small PCBs (we're talking about 0.8" x 0.9") which will allow to build more of them in a shorter time and at constant quality. The PCB layout is ready and I built just another prototype with exactly the same layout on a piece of hole matrix board and it works fine. So I'll look for reasonable quotes from PCB manufacturers now.
Thomas Grillo
Thomas Grillo 4/6/2011 6:54 PM
Hello Thierry. I look forward to your module. I hope all goes well with the printed circuit version.
Jason
Jason 4/6/2011 6:58 PM
Ditto! Any rough idea of when you'll have them ready for sale?
Thierry
Thierry 4/6/2011 7:36 PM
A rough idea is "summer". I hope it will be Summer 2011 ;-)
kkissinger
kkissinger 4/7/2011 11:27 AM
Thierry,

I would definately like to add this mod to my Etherwave Standard as soon as it is available.
Thomas Grillo
Thomas Grillo 4/7/2011 11:34 AM
Thierry, If all goes well, and to plan, I will be in the U.K. for HO2011. If you have some boards available about that time, I'd love to get a board, or two while I'm there.
DOMINIK
DOMINIK 4/7/2011 7:02 PM
In my town a small and fine shop for electronic components is being located. He would offer a readily etched but not drilled EURO-sized PCB (160x100mm) for about 12,- EUR. A film for transfer would be 10,- EUR at a reproduction house. If this would help..
Dominik
FredM
FredM 4/7/2011 10:47 PM
Hi Thierry,

I make my own PCB's - Single or double sided, but not PTH, and no solder-mask or component overlay.. These are suitable for prototyping double-sided boards, and could be used for production on single-sided boards.

Single sided boards are REALLY SIMPLE.. Use a lazer printer to print onto Press-n-peel (http://cgi.ebay.co.u...) transfer paper [i](There are other, lower cost, transfer papers / films - But I have found these do not compare with Press-n-peel - they are all a lot more hassle for a lot lower quality result)[/i] , then use a laminator or iron to transfer the image to the PCB - Then etch the board - I found the The SENO etching kit (http://www.rapidonli...) a neat way to start.

With the above, one can make more than 10 Eurocard sized PCB's.. One can buy Ferric Chloride to top-up the etching bag - My bag lasted for more than 100 big boards! The biggest expense for small boards is a means of cutting the boards, and you need to have a PCB drill.. One can buy 0.8mm FR4 PCB which is a lot easier to cut and drill... A metal shear is cheaper than a bespoke PCB guillotine (£100 against £300) and is just as good .. But you can cut 0.8mm board with strong scissors.

Double sided boards are a lot more hassle - I do the 'solder' side on 0.8mm boards, and the component side on 0.2mm board, I then epoxy these boards together to form a 1mm (ish) double sided board. I have not found a reliable way to do the toner-transfer method directly onto a DS board.. Alignment always goes out.. Bonding two boards together allows one to use a light box and get the alignment perfect.

If you need any advice on any of the above, or getting boards made, just ask.. I have used most of the lower cost European PCB vendors, and know who to avoid! I also have some 0.8mm SS board I could spare (not easy to get in Europe - had to import a batch from the USA).

Fred.

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