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 TubeOhm Jeannie -  the TubeOhm Synth 

 you are not only buying a synthesizer but also the experience of building your own musical instrument 

YOUTUBE Video  , click on the picture

YOUTUBE Video  , click on the picture

Filter FM , Filter LFO  

Overview

 You will be directed to Youtube/Soundcloud via an advanced privacy setting. Or with a direct link.

If you klick on the  video  you leave TubeOhm.com and   go to Youtube.

 

By clicking on the following demosounds you will be redirected to soundcloud. The Soundcloud privacy policy applies .

Be an artist of your sounds

click !!

BUY Jeannie - go to the shop

TubeOhm - Jeannie (Polyphonic Synth)

 

Jeannie is an  brandnew 8-voice polyphonic DIY synthesizer by TubeOhm. We really took  our time to develop it during the past few years and now here is it, currently released in small batches. If it is out of stock, it will come back soon after.

 

Jeannie features 2 Oscillators, Noise, 2 Envelopes, a Multimode Filter, 10 different Waveshaper, 2 LFOs, Ring Modulator, FM, XOR, OR, and a Step Sequencer. The Oscillators can run independently or synced and feature the impressive amount of 945 different waveforms each! 2048 sounds programs can be stored on the SD Card.

 

New to the latest firmware is an adjustable Waveshaper per voice. Unlike in many other synths, the Waveshaper is located after the filter, what gives extremely interesting timbres and has its advantages.

The synth contains a digital effect processor with 14 different, adjustable effects.

 

TubeOhm are constantly improving the firmware at the moment, so you can expect updates and new features during the near future.

 

This is definitely an extremely interesting DIY project with a high price/performance ratio. Hopefully a little community will grow over time around that nice piece of gear.

 

To get an impression what Jeannie is capable of, please check out this Amazona article including a video sound demo and also read the detailed manual - it’s worth it!

 

The TubeOhm website is the resource for some sound demos, building instructions, manuals, firmware updates etc. Please download all that stuff there. 

Infos also here :

 

https://www.amazona.de/tubeohm-jeannie-8-stimmiger-diy-synthesizer

 

https://www.synthanatomy.com/2021/11/tubeohm-jeannie-diy-8-voice-poly-synthesizer-is-out-now-full-details.html

   

You additionally need:

• Power supply 12V DC, min. 1A with 5,5/2,1mm center positive

• Micro SD RAM card 8 to 16 GB

 

This is a Do-It-Yourself kit, not an assembled module. SMD parts are pre-soldered, rest to solder.

DIY level: medium/advanced. 

Building instructions can be downloaded here.

How to build Jeannie :

Here are all files you need to build  Jeannie. Manuals are in german and english.  

  

DIY Manual (do it yourselfe) V 1.05 - 08.04.22

  • Jeannie, DIY Manual in deutsch
  • Jeannie, DIY manual in english

Bill of material for the Motherboard , FX Board and Case 

  • Jeannie Motherboard BOM
  • Jeannie FX PCB
  • Jeannie Case Bom

User manual: New for  firmware V 2.xx

  • Jeannie, Bedienungsanleitung deutsch V 2.xx
  • Jeannie, user manual english V2.xx

Technical info / schematics

  • Jeannie, schematics / Schaltplan
  • Jeannie FX Board schematics /Schaltplan
  • Case zusammenbau
  • Housing Assembly
  • Tips and Tricks for   Jeannie Kit 1 and 2
  • Drilling template for people who want to build their own enclosure. PDF is 1:1

Firmware / sound and seq files

The latest firmware for Jeannie , sounds and some helpful tools can be found on the following >firmware< website. 

  •  Jeannie Firmware V 2.xx

 

Jeannie on github

  • https://github.com/rolfdegen/Jeannie-Open-source-Synthesizer

Jeannie Forum here :  

 

You can also speak english 

On Facebook:

  

https://www.facebook.com/groups/1504610116590934

Copy and paste it into your browser  This is not a direct link. 

 

old Forum  on Sequencer.de

 

https://www.sequencer.de/synthesizer/threads/avr-synthesizer-wave-1-de-generator.87599/page-29

 

new  Forum only for jeannie  (german/english ) here :

 

https://www.sequencer.de/synthesizer/threads/jeannie-polyphonic-diy-synthesizer.160564/

Motherboard

Jeannie - DIY Synthesizer , technical data

  • Power supply unit 12 V DC -minimum 1 A , plug 5.5 - 2.1 centre positive
  • micro SD RAM Karte 8..16 GB
  • Power consumption 3.6 Watt
  • 8 Voices polyphonic
  • multimode Filter
  • 2x ADSR
  • 2x LFO
  • 10 different  Waveshaper
  • 945 different waveforms per oscillator
  • 2 Oszillatoren pro voice
  • xor, xmod, modulo, and, or and FM
  • Step Sequencer - 4 Voice poly - in the latest firmware 
  • 8-fold unison mode with up to 16 oscillators / one voice
  • FX with Reverb, Chorus, Delay , Pitchshifter...../ external modul
  • adjustable clock frequency for the FX DSP - dirty effects
  • 2048 programmes can be stored on micro SD card
  • graphic LCD display
  • Teensy 4.1
  • DIY friendly

FX Board

Jeannie - DIY Synthesizer FX Board 

  • ___________Factory effects
  • clock rate ajustable 10...60 khz
  • low noise  output
  • Chorus 1
  • Flanger
  • Tremolo
  • Pitch shift
  • pitch shift/echo
  • Reverb 1
  • Reverb 2
  • __________Tubeohm new effects
  • X-Delay
  • Chorus 2 /5 stage
  • Tonator
  • Phaser
  • Flangerator
  • Distorter
  • Stereo Echo/Rev
  • Gate

The FX board is based on a Spinsemi FV-1. At first we wanted to switch off the built-in effects programmes, but some of them are quite usable. We have also programmed 8 new effects. 

 The audio output 

 

  • Jeannie uses the PCM 5102A stereo 24 bit converter for audio output,
  • actual output is limited to 16 bits 
  • Ready to use , no soldering required
  • you can  buy it direct from Amazon. but it is also in the complete kit

DIY ready build FX board

The FX board

Here you can see the soldered FX board. The effort is limited to the three SMD components.

 

The board with soldered SMD components can be ordered from TubeOhm.

*** Attention, 16.09.21. Due to the shortage of components, the FV-1s will not be available again until January 2022, according to the European distributor. I have not had good experiences with FV-1s from the spot market.  Therefore, the board will be offered without the FV-1 for the time being. 

 

It's like real life, at the beginning of the year there were still hundreds of them, but when you need them there's nothing to be had.

But Jeannie works without the effects for now.

 

If the FV-1 is available again, mad can simply install the FX board and plug it into the Jeannie - done.  

***  A full kit contains also the FV-1.However, we have received only a limited number of the FV-1 ICs .

Frontside:

you see  the LCD, encoder, pots and switches.

Backside:

On the right side at the back the Teeny 4.1 is plugged in.  On the right side in front of it is the plug-in digital-analogue converter.

In the middle is the FX board . This is simply plugged onto the motherboard

 Thus Jeannie consists of :

  • the DIY motherboard which already has the complete and functional synthesizer. 160x100 mm
  • a DSP extension board (also DIY) if you want to have  effects like reverb,echo,chorus, pitchshifter......***a DSP module is not necessary for the function ... but it sounds much better !
  • the housing  
  • Power Supply 12V minimum 1A

 

The technology 

Jeannie is based on the Teensy 4.1 

DAC  output is 16 bit stereo .

The unit can be freely programmed with 4 potentiometers, one encoder and 6 switches. An color  1,8 TFT  160x128  display provides visual feedback and displays all parameters in

And yes, we used 6 SMD components because space was limited.

However, we made sure that the footprint of the SMD components was enlarged so that the components can be soldered easily. 

But we will also offer boards where the SMD components are already soldered on.

 

So, the coolest thing is the easy plug-in DSP board with the FV-1 and an EE-Prom. 

EE-Prom . So you can - if you can - also write your own effect programmes.

You can also operate Jeannie without the DSP board at first, i.e. with the sound without effects. Then you buy the board, plug it into the board from below .... Well, your ears will be surprised ......

 

Look to Facebook for the latest Info

Facebook  >>>>  Tubeohm.TubeOhm instrumenrts

Here  is the case:

Side parts black and the panel dark blue transparent 

The plexiglas case is a new development compared to the Shruthi Case .  Due to the structure, plugged and additionally screwed with the spacers of the board, it is much more stable.  The additional side panels serve as design elements and tilt the device slightly so that the display is more visible. Special allen screws are used for the optics.   

The scope of delivery includes:

 

  • pre-lasered plexiglass parts 
  • All screws
  • spacer
  • on/off switch
  • Cable 

I would also like to thank Mr. Schön from Plexilaser.de for the production of the housings.

 

https://plexilaser.de/

History , the beginning 

Video Sepsequencer . You will linked  to youtube.

 

https://soundcloud.com/tubeohm-sounds/demojeannie-1

 

11.05.21 Kommen gut  weiter . Aktuell haben wir die Anschlagsdynamik   vom Filter ind VCA programmiert ,getestet und optimiert.

 Hier ein kleines Beispiel , 'Andres kleine Anschlagsdynamik musik' 

11.05.21 Coming along well. Currently we have programmed, tested and optimised the velocity of the filter and VCA.

 Here is a small example, 'Andre's little velocity music'. 

 

first Demotrack - quick and dirty  

https://soundcloud.com/tubeohm-sounds/andres-kleine-jeanie-musik

first Video  with some soundexamples on youtube

when you click on the picture you will be redirected to Youtube

Jeanny , first  older version   >>  Jeanny could possibly look like this  

Der Jeannie DIY Synthesizer

Was ist es überhaupt ?

 

Jeannie ist ein 8 Voice polyphonen synthesizer  mit  2 Oszillatoren, 2 Hüllkurven , 2 LFO , Ring, xor  FM   - und einiges mehr. Den Oszillatoren stehen je 945  verschiedene Wellenformen zur Verfügung.

Ein Multimodefilter sowie ein Waveshaper mit 10 verschiedene Schneidekennlienien  erweitern das Soundspektrum damatisch .

Der eingebaute Step-Sequenzer  ermöglich  spielerisch eigene Sequenzen  zu programmieren . 

Weiterhin enthält der  Synthesizer    einen FX CHip   mit  14 verschiedene Effekten.

 

Jeannie ist als selbstbau Synthesizer konzipiert.  Die Software wird als open source  in kürze  veröffentlicht .

 

Jeannie besteht aus folgenden Komponenten: 

 

  • dem DIY Motherboard  welches schon den kompletten und  funktionsfähigen  Synthesizer hat . 160x100 mm
  • einem DSP Erweiterungsboard ( auch DIY)  wenn man mehr Effekte haben will.Ein DSP modul ist für die Funktion nicht notwendig ... aber  es klingt deutlich besser !!
  • dem Gehäuse  
  • Power Supply 9 V  minimum 600 mA

 

Die Technik 

 

Jeannie basiert auf den Teeny 4.1  

Der Audioausgang ist 16 Bit stereo.

Über 4 Potis , einen Encoder und  6 Tastern kann das Gerät frei programmiert werden .Ein  farbiges 1,8 TFT Display  160x128   dient zum visuellen   Feedback und stellt alle Parameter  über  verschiedene  Menues da .

Und ja ,  wir haben auf 6 SMD  Bauteile zurück gegriffen da Platz knapp war .

Allerdings haben wir daraug geachtet  das der Footprint der SMD Bauteile vergrößert wurde  so das sich die  Bauteile  gut löten lassen . 

 

Also , das geilste  ist  einfach die  aufsteckbare DSP Platine mit dem FV-1 und einem EE-Prom .

Somit kann man - wenn man kann - auch seine Effektprogramme selber schreiben.

Man kann Jeannie auch erst mal nur  ohne DSP - Board betreiben  , also mit dem Sound ohne Effekte. Dann kauft man sich das Board dazu , steckt es von unten in die Platine .... Nun  , eure Ohren werden Augen machen ...... 

 

 

 

 

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DSP - 14 effects

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