Synovatron CVGT1 Eurorack-to-Buchla Converter

If you want to control a Buchla modular synthesizer with your Eurorack (or your Eurorack with a Buchla!) you should know that Buchla uses a different Volts-per-octave ratio as the Eurorack synthesizers, that work on a standard 1 Volts/Oct.
Buchla's pitch CV scaling conforms to neither the common 1V-per-octave or Volt-per-Hz (Roland) standards.

Buchlas generally conform to 1.2V/Octave (100mV/semitone) but older systems have 2V/octave scaling e.g. 258.

The other voltages lie in standard regions. 

Control voltages and timing pulses of the Buchla are +5V (signals with sustain) and +10V (transients only), and should be compatible with most other manufacturers' devices.
Besides that, Eurorack uses 3.5mm mini jack sockets and Buchla uses 4mm banana sockets.

Synovatron's latest module is a Eurorack format Eurorack/Buchla translator called CVGT1.
It was launched a few months ago at the Brighton Modular Meet at the University of Sussex just outside Brighton UK.

The 8 HP wide module allows Eurorack and Buchla synths to interact with each other, as the name suggest it provides a CV and a Gate/Trigger interface.

The module is an active module; The CV amplifiers use precision 0.1% resistors to set the scaling plus very fine adjustment by trim pots to achieve even better accuracy.
Trim pots (on the board) can be adjusted for trigger widths between 0.5ms and 5ms.

Not only does it provide the correct format connectors (and adheres to the Buchla color code) but it also deals with the CV scaling and offsetting and the gate/trigger and timing pulse conversion required to allow control in both directions.
CVGT1 can also be used to adapt to other banana connector synths e.g. Serge or Bugbrand which have 1V/octave using the "1" scale position.

More info at http://synovatron.blogspot.com

Watch the CVGT1 in action below (although it is hardly visible in the video, but i do like the soundscapes):

Video: Mutipatch 1 by Eldancer (Buchla and Eurorack)

mutipatch 1 from Eldancer on Vimeo.

Tony (from Synovatron) mailed me today that he can't make them fast enough, and that he's just over half way through my pre-order waiting list.
He underestimated the demand, initially he only bought enough components, pcbs and front panels for 20 modules (big mistake).
He will be building another ten or so but have negotiated with a local company to build the rest for him.

RIP Joop Stokkermans

The Magic Of The ARP-Synthesizer (1970)
Orchestra conducted by Bert Paige.

Last week on the 25th of October, Dutch composer, piano player and (ARP) synth-pioneer Joop Stokkermans died at the age of 75

Stokkermans was an extremely important contributor to Dutch TV music, radio music and commercials from the early 60s into the late 90s.
Although he is mainly known as a pianist, but he also had a great interest for synthesizers since they first appeared.

In 1970 he recorded a full album on the only working ARP available in Europe at the time, together with help from technician Roddy de Hillster who programmed most of the sounds.

The album contains re-arrangements of standards from classical Bach (Air) and Tchaikovsky (The Swan) compositions, re-arrangement from Bacherach, Paige and Becaud and some compositions of his own.
Together with a full orchestra conducted by Bert Paige this turned out to be a very interesting and maybe even groundbreaking album in Dutch synthesizer-music.

Video: Joop Stokkermans - Blij zijn zolang het nog kan (B.Paige)

Wikipedia in Dutch: http://nl.wikipedia.org/wiki/Joop_Stokkermans
Fragments of tracks at Fonos
http://www.fonos.nl/winkel/product/joop-stokkermans-magic-arp-synthesizer

Random Video: Doepfer A-118

" Listen what a 118 Noise Module sounds like !"

Video: Doepfer A-118


Uploaded by fifteenarts

Doepfer and Vostok Live Modular Music Part 1 and 2

A pair of fresh random videos from YouTube again.
I picked these 2 today, sadly without live-video, but with great soundtracks.
Composed with Doepfer and Vostok modular systems... and much more*.
Watch the slideshows.

Video 1: Doepfer and Vostok Live Modular Music Part 1

Video 2: Doepfer and Vostok Live Modular Music Part 2

* After posting these videos, the creator of these tracks (Marvin Wilson) mailed we with some extra info:

" I made the two tracks using just the modular stuff, recorded live as i always do.

On part one the dark energy's produce the drum sounds... sounds a little like the old roland TR77 or 55... while the a100 did the bass and top line, the vostok also producing the mid sounds plus the ems style fx...

Part two the vostok does some processing of voices from tape while the dark energy's do the high resonating sounds and finally the a100 the squelchy bass, both make heavy use of the analog sequencers run in tandem. 

Thought i would put two contrasting tracks up,anyway glad you like the music, all the best, Marvin"

Uploaded by TAPEHEADS2600
http://www.alextronicrecords.co.uk/artist-pages/marvin-wilson.htm

Doepfer MS-404

In December 1994, Doepfer released the Doepfer MS-404
The MS-404 is a MIDI analog synthesizer with a 24db resonant filter that Dieter Doepfer intentionally created for his own personal pleasure earlier that year.

MS-404 close-up - Picture via Matrixsynth

In the summer of 1994 he created a monophonic analog synthesizer in a 19-inch rackformat / 1 unit high.
Although his module could do so much more than reproducing the sound of a TB-303, most consumers looked at it as an extended clone of the classic Roland TB-303 bassline.

Its two LFOs (that can modulate the single VCO) add a lot extra to the original 303 functionality.
Other extra features include a full ADSR envelope generator, noise, FM and PWM capabilities, an external filter input, CV/GATE interfaces, MIDI implementation and a glide effect.
The MS-404 can be played via MIDI but all parameters are controlled manually only.
The slide and accent effects from the TB-303 are possible on the MS-404 via glide control and it uses MIDI velocity for accent.

MS-404 Picture via Matrixsynth

The price was around 300 Euros (598 DM) and the module was released in a time when the demand for 303-clones was huge and many different manufacturers were building those; Future Retro 777, Syntecno TeeBee, Control Synthesis Deep Bass 9, and MAM MB33 were  few competitors, to only name a few. (A large list of 303-clones can be found on Wikipedia)

In the beginning Doepfer only planned to launch 50 to 100 modules, but they received almost 500 orders in the first two months in 1995.
At the end of 1997 Doepfer had sold more than 3000 MS-404 units.
The last MS-404 was sold in March 2001, as the amount of inquiries was falling (from 100 items per month to hardly 10 items per month at the end of 2000).

The few differences between the 2 regular versions of this module are minor.
There were always rumors that the different versions of the MS-404 sound different, but there were never any changes in the MS-404 hardware.
Version 1 can not use MIDI sustain, but this doesn't have any effect on the sound.

The rare green version of the MS-404
(Picture via Marc C Young)

In 1997 approximately 100 limited edition synths (with a green faceplate and a printing 'Music Store') were sold as a 25th anniversary special for Music Store of Cologne, Germany.

Doepfer still offers technical support for the unit and the manual is still available online.

Video: Doepfer MS-404

" Smooth synthpop demo made with the Doepfer MS-404.
This is really a little 1 VCO beast. Multitrack + external FX. "
Uploaded by SyntheticMachines

More:
http://www.doepfer.de/ms404_e.htm
http://www.vintagesynth.com/misc/ms404.php
http://en.wikipedia.org/wiki/MS-404

New BNC Connectors For A-178 Theremin Antenna

It's good to see that Doepfer also keeps improving the older modules.
I already complained in July 2011 about the lousy connector of the A-178 Theremin antennas
(read the post HERE), and look now what they recently announced:

" From August 2012 an improved version for the antenna connector is used.

A so-called BNC connector is used to connect the antenna to the module (same type of connector as used in measuring equipment like oscilloscopes)."

The old A-78 antenna with mini-
jack connector

The new version of the module is so brand new that it still has to be sent to Doepfer's photographer for taking pictures.
The new model seems to have a completely different front panel and pc board.

If you are experienced with DIY you may replace the 3.5 mm socket by a BNC socket yourself and increase the diameter for the new connector in the front panel, but you can also place it parallel to the original antenna socket at the same height, but more to the right where there is more space behind the front-panel (at the other side of the PCB).

Doepfer wrote to me:
" We never tried it but it should be possible to remove the old miniature jack socket and widen the hole asymmetrically (i.e. not drilling it but using a rasp) so that the BNC socket can be mounted and manually wired to the pc board.
But I cannot guarantee that it works as I have no old A-178 available to try it out.
But you may also connect the BNC socket in parallel to the miniature jack socket.
Pay attention that an isolated version of the BNC socket is required
(no electrical connection to GND/front panel is allowed) ! "

The connectors are not available via Doepfer, but i did already place an order today for 2 new antennas (for 20 Euros each).
You can probably read more about this project next month...

SiteTip: Waveform City

Another interesting site that i only recently discovered is WaveForm City.

Waveform City produces and publishes interviews with synth-manufacturers and influential people in the field of analog synthesizers.
Pretty interesting stuff... so far they published 14 episodes since the beginning of this year.
They have already posted interviews with Harvestman, WMD, Make Noise, Mark Verbos, Richard Devine, Tom Erbe and many others, i hope they will interview Dieter soon...

You can find all interviews at: http://waveformcity.blogspot.com



You can also follow Waveform City on SoundCloud via
https://soundcloud.com/blz