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ondes martenot
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axg20202



Joined: Mar 11, 2013
Posts: 20
Location: London

PostPosted: Tue May 14, 2013 9:43 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks for the detailed reply. I guess I will just have to experiment with some switches and resistor networks. By the way, the tip re the guitar hero whammy bar was a good one. I picked up 5 (yeah, 5...overkill but they were sold in 5s) faulty customer returns on e-bay for very little. Seems to work well. I toyed with the idea of going the breath control route (I have a Yamaha S80, which has a BC input), but the cost of the controller put me off - Yamaha BC3s are as rare as rocking horse 5h1t as they aren't made any more. Other options are costly too. So, a lever it is. I'm also seeing if I can integrate a foot controller somehow.

Thanks for sharing your notes/videos - they have helped a lot.
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yusynth



Joined: Nov 24, 2005
Posts: 1222
Location: France

PostPosted: Sun Jun 02, 2013 2:45 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi friends

Yesterday I received the Eowave Metalik Resonator, an ideal complement for my ondes Martenot.
Here are some photos of the resonator. Note that the Resonator is normally sold by Eowave with a tolex finish for the cabinet but I asked them send me the raw cabinet such that I can cover it myself with wood veneer matching that of my ondes Martenot


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Seen from the back, one can see the compressor motor attached to the Tam foil in its upper part, and the 50W power amplifier on the bottom
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Frontview : the MiniBrute on the left gives an idea of the size of the resonator. It's the bigger model.
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v-un-v
Janitor
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Joined: May 16, 2005
Posts: 8932
Location: Birmingham, England, UK
Audio files: 11
G2 patch files: 1

PostPosted: Sun Jun 02, 2013 4:03 pm    Post subject: Reply with quote  Mark this post and the followings unread

I just read about this Finnish guy on Synthtopia who's made an Ondes Martenot style modification to the Korg Monotron. Nice video too!

http://electronicmelodist.blogspot.co.uk

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DAS KOMPUTERMASCHINE IST NICHT FÜR DER GEFINGERPOKEN UND MITTENGRABEN! ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKSEN.
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axg20202



Joined: Mar 11, 2013
Posts: 20
Location: London

PostPosted: Mon Jun 03, 2013 5:28 am    Post subject: Reply with quote  Mark this post and the followings unread

Re trill buttons:
axg20202 wrote:
Thanks for the detailed reply. I guess I will just have to experiment with some switches and resistor networks.


OK, I'm making progress on my ondes controller. But today I decided to have a think about how to implement trill buttons into the voltage offset arrangement, culminating in some calculations that are almost certainly incorrect Embarassed Very Happy

Here goes:

1v per octave.

Increase of 1/12v (0.083v) gives a semitone rise in pitch
Increase of 1/6v (0.167v) gives a whole tone rise in pitch

Using the offset circuit mentioned earlier, a 100k linear pot gives the 0-10v range of offset voltage values. So, a 50k setting gives 5v offset.
If so, then 0.83k gives 0.083v offset (semitone) and 1.67k gives 0.167v offset (whole tone).
Sooo, if I wire in momentary switches that insert/remove either 830R or 167R in series with the 100k pot, I should get a semitone or whole tone increase in pitch....

Now, the above is probably total testicles, so if anyone can chime in that would be great! Laughing
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Infrablue



Joined: Dec 29, 2011
Posts: 123
Location: Utah

PostPosted: Sun Jun 09, 2013 2:53 am    Post subject: Reply with quote  Mark this post and the followings unread

yusynth wrote:
Hi friends

Yesterday I received the Eowave Metalik Resonator, an ideal complement for my ondes Martenot.
Here are some photos of the resonator. Note that the Resonator is normally sold by Eowave with a tolex finish for the cabinet but I asked them send me the raw cabinet such that I can cover it myself with wood veneer matching that of my ondes Martenot


Just incredible! I saw these and it's so tempting to get one!

How amazing you have an actual Ondes Martenot as well! Any performance vids of it? Very neat stuff. Thanks for sharing this.
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Infrablue



Joined: Dec 29, 2011
Posts: 123
Location: Utah

PostPosted: Sun Jun 09, 2013 2:55 am    Post subject: Reply with quote  Mark this post and the followings unread

v-un-v wrote:
I just read about this Finnish guy on Synthtopia who's made an Ondes Martenot style modification to the Korg Monotron. Nice video too!

http://electronicmelodist.blogspot.co.uk



I just randomly found this as well on youtube!

I really like it!! We done!!

And check out his expression lever.... simple as can be, and sounds great.

here's the video: http://www.youtube.com/watch?v=YpDvUq1EvDY
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yusynth



Joined: Nov 24, 2005
Posts: 1222
Location: France

PostPosted: Sun Jun 09, 2013 3:11 am    Post subject: Reply with quote  Mark this post and the followings unread

Infrablue wrote:
How amazing you have an actual Ondes Martenot as well! Any performance vids of it? Very neat stuff. Thanks for sharing this.


Well, living in France helps a lot to find ondes Martenot, although these are quite rare and very much sought after. My ondes Martenot (built in the 60s therefore it's a tube model) are working fine but the woodwork which is in a very used and thorn state. I hope to have finished restoring the woodwork by mid-summer.

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tojpeters



Joined: Feb 04, 2013
Posts: 22
Location: cali (far north)

PostPosted: Wed Jun 12, 2013 3:16 pm    Post subject: Reply with quote  Mark this post and the followings unread

Anyone have a suggestion for a transducer for a D.I.Y. version? I really know nothing about transducers, so even specs to look for or places that carry a selection would be very helpful. My controller project has made good progress,everything is tested and I just need a few more pieces of wood to finish it.
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tojpeters



Joined: Feb 04, 2013
Posts: 22
Location: cali (far north)

PostPosted: Wed Jun 26, 2013 7:05 am    Post subject: Reply with quote  Mark this post and the followings unread

just need to sand/finish the wood, replace a pot that i managed to destroy, and build a couple A/R generators for the right side control panel. everything is tested, just need to put it all together. I found the transducers i need, i need a gong now. I'm also mounting a couple of them on the soundboards of the reed organ this is built on. Also need to re-tune the keyboard as i switched from +/- 12v to +/- 15v. Probably wait on that as it only does about 20 keys and i think that can be improved. i need to be able to hold the voltages [0-12VDC and 0-150VDC)after key up until the next key down to really make it nice.


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tojpeters



Joined: Feb 04, 2013
Posts: 22
Location: cali (far north)

PostPosted: Wed Jul 17, 2013 4:13 pm    Post subject: Reply with quote  Mark this post and the followings unread

everything works. now i need to add position markers. will add 2 ADSRs in the future.


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mosc
Site Admin


Joined: Jan 31, 2003
Posts: 17611
Location: Allentown, PA
Audio files: 125
G2 patch files: 60

PostPosted: Thu Jul 18, 2013 10:46 am    Post subject: Reply with quote  Mark this post and the followings unread

Beautiful work, tojpeters.
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Infrablue



Joined: Dec 29, 2011
Posts: 123
Location: Utah

PostPosted: Wed Aug 28, 2013 2:01 am    Post subject: Reply with quote  Mark this post and the followings unread

tojpeters... this is looking great. Can't wait to hear it!
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tojpeters



Joined: Feb 04, 2013
Posts: 22
Location: cali (far north)

PostPosted: Wed Aug 28, 2013 8:46 am    Post subject: Reply with quote  Mark this post and the followings unread

thanks. i was going to post video but this thread kinda died out. it excels at the things one would expect- vibrato, slides. not as good at fast playing,takes time to move up an octave or two.
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